38118561 has 32 divisors (see below), whose sum is σ = 57953280. Its totient is φ = 22118400.

The previous prime is 38118559. The next prime is 38118571. The reversal of 38118561 is 16581183.

It is not a de Polignac number, because 38118561 - 2¹ = 38118559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38118571) 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, 49185 + ... + 49953.

It is an arithmetic number, because the mean of its divisors is an integer number (1811040).

Almost surely, 2^38118561 is an apocalyptic number.

38118561 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38118561 is a deficient number, since it is larger than the sum of its proper divisors (19834719).

38118561 is a wasteful number, since it uses less digits than its factorization.

38118561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its digits is 5760, while the sum is 33.

The square root of 38118561 is about 6174.0230806177. The cubic root of 38118561 is about 336.5468260629.

The spelling of 38118561 in words is "thirty-eight million, one hundred eighteen thousand, five hundred sixty-one".