38958631 has 2 divisors, whose sum is σ = 38958632. Its totient is φ = 38958630.

The previous prime is 38958589. The next prime is 38958641. The reversal of 38958631 is 13685983.

38958631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38958631 is a prime.

It is a super-2 number, since 2×38958631² = 3035549858788322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38958641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19479315 + 19479316.

It is an arithmetic number, because the mean of its divisors is an integer number (19479316).

Almost surely, 2^38958631 is an apocalyptic number.

38958631 is a deficient number, since it is larger than the sum of its proper divisors (1).

38958631 is an equidigital number, since it uses as much as digits as its factorization.

38958631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 38958631 is about 6241.6849487939. The cubic root of 38958631 is about 339.0011950196.

The spelling of 38958631 in words is "thirty-eight million, nine hundred fifty-eight thousand, six hundred thirty-one".