38159993 has 2 divisors, whose sum is σ = 38159994. Its totient is φ = 38159992.

The previous prime is 38159981. The next prime is 38160007. The reversal of 38159993 is 39995183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33779344 + 4380649 = 5812^2 + 2093^2 .

It is a cyclic number.

It is not a de Polignac number, because 38159993 - 2⁶ = 38159929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38159903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19079996 + 19079997.

It is an arithmetic number, because the mean of its divisors is an integer number (19079997).

Almost surely, 2^38159993 is an apocalyptic number.

It is an amenable number.

38159993 is a deficient number, since it is larger than the sum of its proper divisors (1).

38159993 is an equidigital number, since it uses as much as digits as its factorization.

38159993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 38159993 is about 6177.3775180088. The cubic root of 38159993 is about 336.6687155819.

The spelling of 38159993 in words is "thirty-eight million, one hundred fifty-nine thousand, nine hundred ninety-three".