38157665 has 24 divisors (see below), whose sum is σ = 56674368. Its totient is φ = 24148800.

The previous prime is 38157661. The next prime is 38157697. The reversal of 38157665 is 56675183.

It is not a de Polignac number, because 38157665 - 2² = 38157661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38157661) 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, 2690 + ... + 9140.

It is an arithmetic number, because the mean of its divisors is an integer number (2361432).

Almost surely, 2^38157665 is an apocalyptic number.

38157665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38157665 is a deficient number, since it is larger than the sum of its proper divisors (18516703).

38157665 is a wasteful number, since it uses less digits than its factorization.

38157665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489 (or 6476 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 38157665 is about 6177.1890856602. The cubic root of 38157665 is about 336.6618691384.

The spelling of 38157665 in words is "thirty-eight million, one hundred fifty-seven thousand, six hundred sixty-five".