38731953 has 16 divisors (see below), whose sum is σ = 55991936. Its totient is φ = 23673600.

The previous prime is 38731943. The next prime is 38731969. The reversal of 38731953 is 35913783.

It is not a de Polignac number, because 38731953 - 2⁸ = 38731697 is a prime.

It is a super-5 number, since 5×38731953⁵ (a number of 39 digits) contains 55555 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is the 6224-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (38731943) by changing a digit.

It is a nontrivial repunit in base 6223.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2601 + ... + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (3499496).

Almost surely, 2^38731953 is an apocalyptic number.

It is an amenable number.

38731953 is a deficient number, since it is larger than the sum of its proper divisors (17259983).

38731953 is a wasteful number, since it uses less digits than its factorization.

38731953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6744.

The product of its digits is 68040, while the sum is 39.

The square root of 38731953 is about 6223.5000602555. The cubic root of 38731953 is about 338.3424309934.

The spelling of 38731953 in words is "thirty-eight million, seven hundred thirty-one thousand, nine hundred fifty-three".