38693121 has 16 divisors (see below), whose sum is σ = 52450944. Its totient is φ = 25369344.

The previous prime is 38693117. The next prime is 38693129. The reversal of 38693121 is 12139683.

It is not a de Polignac number, because 38693121 - 2² = 38693117 is a prime.

It is a super-2 number, since 2×38693121² = 2994315225441282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38693129) 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, 52860 + ... + 53586.

It is an arithmetic number, because the mean of its divisors is an integer number (3278184).

Almost surely, 2^38693121 is an apocalyptic number.

It is an amenable number.

38693121 is a deficient number, since it is larger than the sum of its proper divisors (13757823).

38693121 is a wasteful number, since it uses less digits than its factorization.

38693121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its digits is 7776, while the sum is 33.

The square root of 38693121 is about 6220.3794900311. The cubic root of 38693121 is about 338.2293210542.

The spelling of 38693121 in words is "thirty-eight million, six hundred ninety-three thousand, one hundred twenty-one".