38040931 has 2 divisors, whose sum is σ = 38040932. Its totient is φ = 38040930.

The previous prime is 38040923. The next prime is 38040973. The reversal of 38040931 is 13904083.

It is a weak prime.

It is an emirp because it is prime and its reverse (13904083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38040931 - 2³ = 38040923 is a prime.

It is a super-2 number, since 2×38040931² = 2894224862693522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38040931.

It is not a weakly prime, because it can be changed into another prime (38040991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19020465 + 19020466.

It is an arithmetic number, because the mean of its divisors is an integer number (19020466).

Almost surely, 2^38040931 is an apocalyptic number.

38040931 is a deficient number, since it is larger than the sum of its proper divisors (1).

38040931 is an equidigital number, since it uses as much as digits as its factorization.

38040931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 38040931 is about 6167.7330519406. The cubic root of 38040931 is about 336.3182070284.

The spelling of 38040931 in words is "thirty-eight million, forty thousand, nine hundred thirty-one".