38875861 has 2 divisors, whose sum is σ = 38875862. Its totient is φ = 38875860.

The previous prime is 38875853. The next prime is 38875873. The reversal of 38875861 is 16857883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25959025 + 12916836 = 5095^2 + 3594^2 .

It is a cyclic number.

It is not a de Polignac number, because 38875861 - 2³ = 38875853 is a prime.

It is a super-2 number, since 2×38875861² = 3022665136982642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38875801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19437930 + 19437931.

It is an arithmetic number, because the mean of its divisors is an integer number (19437931).

Almost surely, 2^38875861 is an apocalyptic number.

It is an amenable number.

38875861 is a deficient number, since it is larger than the sum of its proper divisors (1).

38875861 is an equidigital number, since it uses as much as digits as its factorization.

38875861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 38875861 is about 6235.0510021972. The cubic root of 38875861 is about 338.7609485257.

The spelling of 38875861 in words is "thirty-eight million, eight hundred seventy-five thousand, eight hundred sixty-one".