38995081 has 2 divisors, whose sum is σ = 38995082. Its totient is φ = 38995080.

The previous prime is 38995039. The next prime is 38995091. The reversal of 38995081 is 18059983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 13995081 = 5000^2 + 3741^2 .

It is an emirp because it is prime and its reverse (18059983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38995081 - 2⁹ = 38994569 is a prime.

It is a super-2 number, since 2×38995081² = 3041232684393122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38995031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19497540 + 19497541.

It is an arithmetic number, because the mean of its divisors is an integer number (19497541).

Almost surely, 2^38995081 is an apocalyptic number.

It is an amenable number.

38995081 is a deficient number, since it is larger than the sum of its proper divisors (1).

38995081 is an equidigital number, since it uses as much as digits as its factorization.

38995081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 38995081 is about 6244.6041507849. The cubic root of 38995081 is about 339.1068861215.

The spelling of 38995081 in words is "thirty-eight million, nine hundred ninety-five thousand, eighty-one".