38678413 has 2 divisors, whose sum is σ = 38678414. Its totient is φ = 38678412.

The previous prime is 38678399. The next prime is 38678429. The reversal of 38678413 is 31487683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33212169 + 5466244 = 5763^2 + 2338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38678413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38678443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339206 + 19339207.

It is an arithmetic number, because the mean of its divisors is an integer number (19339207).

Almost surely, 2^38678413 is an apocalyptic number.

It is an amenable number.

38678413 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678413 is an equidigital number, since it uses as much as digits as its factorization.

38678413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 38678413 is about 6219.1971346790. The cubic root of 38678413 is about 338.1864597981.

The spelling of 38678413 in words is "thirty-eight million, six hundred seventy-eight thousand, four hundred thirteen".