3874431557 has 2 divisors, whose sum is σ = 3874431558. Its totient is φ = 3874431556.

The previous prime is 3874431499. The next prime is 3874431619. The reversal of 3874431557 is 7551344783.

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., 3565761796 + 308669761 = 59714^2 + 17569^2 .

It is an emirp because it is prime and its reverse (7551344783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3874431557 - 2²⁸ = 3605996101 is a prime.

It is a super-2 number, since 2×3874431557² = 30022439779754888498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3874430557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937215778 + 1937215779.

It is an arithmetic number, because the mean of its divisors is an integer number (1937215779).

Almost surely, 2^3874431557 is an apocalyptic number.

It is an amenable number.

3874431557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3874431557 is an equidigital number, since it uses as much as digits as its factorization.

3874431557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 47.

The square root of 3874431557 is about 62244.9319784350. The cubic root of 3874431557 is about 1570.6135183176.

The spelling of 3874431557 in words is "three billion, eight hundred seventy-four million, four hundred thirty-one thousand, five hundred fifty-seven".