38981607 has 32 divisors (see below), whose sum is σ = 62092800. Its totient is φ = 21732480.

The previous prime is 38981603. The next prime is 38981669. The reversal of 38981607 is 70618983.

It is not a de Polignac number, because 38981607 - 2² = 38981603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38981603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43807 + ... + 44687.

It is an arithmetic number, because the mean of its divisors is an integer number (1940400).

Almost surely, 2^38981607 is an apocalyptic number.

38981607 is a deficient number, since it is larger than the sum of its proper divisors (23111193).

38981607 is an equidigital number, since it uses as much as digits as its factorization.

38981607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 38981607 is about 6243.5252061636. The cubic root of 38981607 is about 339.0678243354.

The spelling of 38981607 in words is "thirty-eight million, nine hundred eighty-one thousand, six hundred seven".