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38819149093 = 239883170777
BaseRepresentation
bin100100001001110011…
…010011010100100101
310201012101002002120201
4210021303103110211
51114000200232333
625455553030501
72542655215534
oct441163232445
9121171062521
1038819149093
11155104412aa
127634555431
13387853410a
141c4382431b
151022ed017d
hex909cd3525

38819149093 has 8 divisors (see below), whose sum is σ = 40511274048. Its totient is φ = 37127385504.

The previous prime is 38819149091. The next prime is 38819149157. The reversal of 38819149093 is 39094191883.

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

It is a cyclic number.

It is not a de Polignac number, because 38819149093 - 21 = 38819149091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38819149091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141921 + ... + 312697.

It is an arithmetic number, because the mean of its divisors is an integer number (5063909256).

Almost surely, 238819149093 is an apocalyptic number.

It is an amenable number.

38819149093 is a deficient number, since it is larger than the sum of its proper divisors (1692124955).

38819149093 is a wasteful number, since it uses less digits than its factorization.

38819149093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180683.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 38819149093 in words is "thirty-eight billion, eight hundred nineteen million, one hundred forty-nine thousand, ninety-three".

Divisors: 1 23 9883 170777 227309 3927871 1687789091 38819149093