38981539 has 16 divisors (see below), whose sum is σ = 42071040. Its totient is φ = 36036000.

The previous prime is 38981519. The next prime is 38981563. The reversal of 38981539 is 93518983.

It is a cyclic number.

It is not a de Polignac number, because 38981539 - 2¹¹ = 38979491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38981519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117604 + ... + 117934.

It is an arithmetic number, because the mean of its divisors is an integer number (2629440).

Almost surely, 2^38981539 is an apocalyptic number.

38981539 is a deficient number, since it is larger than the sum of its proper divisors (3089501).

38981539 is a wasteful number, since it uses less digits than its factorization.

38981539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522.

The product of its digits is 233280, while the sum is 46.

The square root of 38981539 is about 6243.5197605197. The cubic root of 38981539 is about 339.0676271772.

The spelling of 38981539 in words is "thirty-eight million, nine hundred eighty-one thousand, five hundred thirty-nine".