4138870457 has 2 divisors, whose sum is σ = 4138870458. Its totient is φ = 4138870456.

The previous prime is 4138870441. The next prime is 4138870499. The reversal of 4138870457 is 7540788314.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3032044096 + 1106826361 = 55064^2 + 33269^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138870457 - 2⁴ = 4138870441 is a prime.

It is not a weakly prime, because it can be changed into another prime (4138870427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069435228 + 2069435229.

It is an arithmetic number, because the mean of its divisors is an integer number (2069435229).

Almost surely, 2^4138870457 is an apocalyptic number.

It is an amenable number.

4138870457 is a deficient number, since it is larger than the sum of its proper divisors (1).

4138870457 is an equidigital number, since it uses as much as digits as its factorization.

4138870457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 4138870457 is about 64334.0536341369. The cubic root of 4138870457 is about 1605.5627283752.

The spelling of 4138870457 in words is "four billion, one hundred thirty-eight million, eight hundred seventy thousand, four hundred fifty-seven".