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20202001093 = 731359720353
BaseRepresentation
bin10010110100001000…
…100001001011000101
31221010220121222122201
4102310020201023011
5312333203013333
613140342554501
71313424114241
oct226410411305
957126558581
1020202001093
11862755947a
123ab9738a31
131b9c4b2a01
14d99069421
157d386d17d
hex4b42212c5

20202001093 has 8 divisors (see below), whose sum is σ = 20481253208. Its totient is φ = 19922817024.

The previous prime is 20202001081. The next prime is 20202001103. The reversal of 20202001093 is 39010020202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 296459524 + 19905541569 = 17218^2 + 141087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20202001093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20202001093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202001013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982405 + ... + 1002757.

It is an arithmetic number, because the mean of its divisors is an integer number (2560156651).

Almost surely, 220202001093 is an apocalyptic number.

It is an amenable number.

20202001093 is a deficient number, since it is larger than the sum of its proper divisors (279252115).

20202001093 is a wasteful number, since it uses less digits than its factorization.

20202001093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34023.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20202001093 its reverse (39010020202), we get a palindrome (59212021295).

The spelling of 20202001093 in words is "twenty billion, two hundred two million, one thousand, ninety-three".

Divisors: 1 73 13597 20353 992581 1485769 276739741 20202001093