38905670520 has 96 divisors (see below), whose sum is σ = 131126551920. Its totient is φ = 10374842880.

The previous prime is 38905670519. The next prime is 38905670521. The reversal of 38905670520 is 2507650983.

It is a happy number.

38905670520 is a `hidden beast` number, since 3 + 8 + 9 + 0 + 56 + 70 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (38905670519) and next prime (38905670521).

It is a super-2 number, since 2×38905670520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38905670521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1991601 + ... + 2011040.

Almost surely, 2^38905670520 is an apocalyptic number.

38905670520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38905670520 is an abundant number, since it is smaller than the sum of its proper divisors (92220881400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38905670520 is a wasteful number, since it uses less digits than its factorization.

38905670520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002667 (or 4002651 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 38905670520 in words is "thirty-eight billion, nine hundred five million, six hundred seventy thousand, five hundred twenty".