38538181868537 has 64 divisors (see below), whose sum is σ = 45436642675200. Its totient is φ = 32387597383680.

The previous prime is 38538181868429. The next prime is 38538181868539. The reversal of 38538181868537 is 73586818183583.

It is a cyclic number.

It is not a de Polignac number, because 38538181868537 - 2¹⁰ = 38538181867513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38538181868539) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1379255987 + ... + 1379283927.

It is an arithmetic number, because the mean of its divisors is an integer number (709947541800).

Almost surely, 2^{38538181868537} is an apocalyptic number.

It is an amenable number.

38538181868537 is a deficient number, since it is larger than the sum of its proper divisors (6898460806663).

38538181868537 is a wasteful number, since it uses less digits than its factorization.

38538181868537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30258.

The product of its digits is 928972800, while the sum is 74.

The spelling of 38538181868537 in words is "thirty-eight trillion, five hundred thirty-eight billion, one hundred eighty-one million, eight hundred sixty-eight thousand, five hundred thirty-seven".