3138935977 has 2 divisors, whose sum is σ = 3138935978. Its totient is φ = 3138935976.

The previous prime is 3138935903. The next prime is 3138935999. The reversal of 3138935977 is 7795398313.

3138935977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2793756736 + 345179241 = 52856^2 + 18579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3138935977 is a prime.

It is not a weakly prime, because it can be changed into another prime (3138935477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569467988 + 1569467989.

It is an arithmetic number, because the mean of its divisors is an integer number (1569467989).

Almost surely, 2^3138935977 is an apocalyptic number.

It is an amenable number.

3138935977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138935977 is an equidigital number, since it uses as much as digits as its factorization.

3138935977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 55.

The square root of 3138935977 is about 56026.2079477096. The cubic root of 3138935977 is about 1464.1789288370.

The spelling of 3138935977 in words is "three billion, one hundred thirty-eight million, nine hundred thirty-five thousand, nine hundred seventy-seven".