38118989 has 2 divisors, whose sum is σ = 38118990. Its totient is φ = 38118988.

The previous prime is 38118937. The next prime is 38119009. The reversal of 38118989 is 98981183.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37920964 + 198025 = 6158^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 38118989 - 2²⁰ = 37070413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38118929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19059494 + 19059495.

It is an arithmetic number, because the mean of its divisors is an integer number (19059495).

Almost surely, 2^38118989 is an apocalyptic number.

It is an amenable number.

38118989 is a deficient number, since it is larger than the sum of its proper divisors (1).

38118989 is an equidigital number, since it uses as much as digits as its factorization.

38118989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 47.

The square root of 38118989 is about 6174.0577418745. The cubic root of 38118989 is about 336.5480856549.

The spelling of 38118989 in words is "thirty-eight million, one hundred eighteen thousand, nine hundred eighty-nine".