38756491 has 2 divisors, whose sum is σ = 38756492. Its totient is φ = 38756490.

The previous prime is 38756483. The next prime is 38756507. The reversal of 38756491 is 19465783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38756491 - 2³ = 38756483 is a prime.

It is not a weakly prime, because it can be changed into another prime (38756461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19378245 + 19378246.

It is an arithmetic number, because the mean of its divisors is an integer number (19378246).

Almost surely, 2^38756491 is an apocalyptic number.

38756491 is a deficient number, since it is larger than the sum of its proper divisors (1).

38756491 is an equidigital number, since it uses as much as digits as its factorization.

38756491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 38756491 is about 6225.4711468290. The cubic root of 38756491 is about 338.4138663613.

The spelling of 38756491 in words is "thirty-eight million, seven hundred fifty-six thousand, four hundred ninety-one".