38155985 has 16 divisors (see below), whose sum is σ = 52450176. Its totient is φ = 26103168.

The previous prime is 38155979. The next prime is 38156003. The reversal of 38155985 is 58955183.

It is not a de Polignac number, because 38155985 - 2¹⁴ = 38139601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18149 + ... + 20141.

It is an arithmetic number, because the mean of its divisors is an integer number (3278136).

Almost surely, 2^38155985 is an apocalyptic number.

38155985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38155985 is a deficient number, since it is larger than the sum of its proper divisors (14294191).

38155985 is a wasteful number, since it uses less digits than its factorization.

38155985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552.

The product of its digits is 216000, while the sum is 44.

The square root of 38155985 is about 6177.0530999822. The cubic root of 38155985 is about 336.6569282329.

The spelling of 38155985 in words is "thirty-eight million, one hundred fifty-five thousand, nine hundred eighty-five".