38707913 has 2 divisors, whose sum is σ = 38707914. Its totient is φ = 38707912.

The previous prime is 38707909. The next prime is 38707943. The reversal of 38707913 is 31970783.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26296384 + 12411529 = 5128^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 38707913 - 2² = 38707909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38707943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19353956 + 19353957.

It is an arithmetic number, because the mean of its divisors is an integer number (19353957).

Almost surely, 2^38707913 is an apocalyptic number.

It is an amenable number.

38707913 is a deficient number, since it is larger than the sum of its proper divisors (1).

38707913 is an equidigital number, since it uses as much as digits as its factorization.

38707913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 38707913 is about 6221.5683713996. The cubic root of 38707913 is about 338.2724161452.

The spelling of 38707913 in words is "thirty-eight million, seven hundred seven thousand, nine hundred thirteen".