38642711 has 2 divisors, whose sum is σ = 38642712. Its totient is φ = 38642710.

The previous prime is 38642651. The next prime is 38642731. The reversal of 38642711 is 11724683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38642711 is a prime.

It is a super-2 number, since 2×38642711² = 2986518226859042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38642731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19321355 + 19321356.

It is an arithmetic number, because the mean of its divisors is an integer number (19321356).

Almost surely, 2^38642711 is an apocalyptic number.

38642711 is a deficient number, since it is larger than the sum of its proper divisors (1).

38642711 is an equidigital number, since it uses as much as digits as its factorization.

38642711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 38642711 is about 6216.3261658314. The cubic root of 38642711 is about 338.0823737469.

The spelling of 38642711 in words is "thirty-eight million, six hundred forty-two thousand, seven hundred eleven".