20033850349 has 4 divisors (see below), whose sum is σ = 20059902940. Its totient is φ = 20007797760.

The previous prime is 20033850313. The next prime is 20033850359. The reversal of 20033850349 is 94305833002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14323781124 + 5710069225 = 119682^2 + 75565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20033850349 is a prime.

It is a super-2 number, since 2×20033850349² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033850359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13025142 + ... + 13026679.

It is an arithmetic number, because the mean of its divisors is an integer number (5014975735).

Almost surely, 2^20033850349 is an apocalyptic number.

It is an amenable number.

20033850349 is a deficient number, since it is larger than the sum of its proper divisors (26052591).

20033850349 is an equidigital number, since it uses as much as digits as its factorization.

20033850349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26052590.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 20033850349 in words is "twenty billion, thirty-three million, eight hundred fifty thousand, three hundred forty-nine".