38916557 has 2 divisors, whose sum is σ = 38916558. Its totient is φ = 38916556.

The previous prime is 38916551. The next prime is 38916583. The reversal of 38916557 is 75561983.

38916557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33016516 + 5900041 = 5746^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 38916557 - 2²⁰ = 37867981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38916551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19458278 + 19458279.

It is an arithmetic number, because the mean of its divisors is an integer number (19458279).

Almost surely, 2^38916557 is an apocalyptic number.

It is an amenable number.

38916557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38916557 is an equidigital number, since it uses as much as digits as its factorization.

38916557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 38916557 is about 6238.3136343086. The cubic root of 38916557 is about 338.8791144642.

The spelling of 38916557 in words is "thirty-eight million, nine hundred sixteen thousand, five hundred fifty-seven".