3157587493 has 2 divisors, whose sum is σ = 3157587494. Its totient is φ = 3157587492.

The previous prime is 3157587431. The next prime is 3157587529. The reversal of 3157587493 is 3947857513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3016975329 + 140612164 = 54927^2 + 11858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3157587493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3157587493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3157587593) 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, 1578793746 + 1578793747.

It is an arithmetic number, because the mean of its divisors is an integer number (1578793747).

Almost surely, 2^3157587493 is an apocalyptic number.

It is an amenable number.

3157587493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3157587493 is an equidigital number, since it uses as much as digits as its factorization.

3157587493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 52.

The square root of 3157587493 is about 56192.4149062843. The cubic root of 3157587493 is about 1467.0732476503.

The spelling of 3157587493 in words is "three billion, one hundred fifty-seven million, five hundred eighty-seven thousand, four hundred ninety-three".