38713657 has 2 divisors, whose sum is σ = 38713658. Its totient is φ = 38713656.

The previous prime is 38713643. The next prime is 38713663. The reversal of 38713657 is 75631783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21706281 + 17007376 = 4659^2 + 4124^2 .

It is an emirp because it is prime and its reverse (75631783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38713657 - 2⁷ = 38713529 is a prime.

It is not a weakly prime, because it can be changed into another prime (38713667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19356828 + 19356829.

It is an arithmetic number, because the mean of its divisors is an integer number (19356829).

Almost surely, 2^38713657 is an apocalyptic number.

It is an amenable number.

38713657 is a deficient number, since it is larger than the sum of its proper divisors (1).

38713657 is an equidigital number, since it uses as much as digits as its factorization.

38713657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 38713657 is about 6222.0299742126. The cubic root of 38713657 is about 338.2891477857.

The spelling of 38713657 in words is "thirty-eight million, seven hundred thirteen thousand, six hundred fifty-seven".