157937493 has 16 divisors (see below), whose sum is σ = 240869376. Its totient is φ = 90174000.

The previous prime is 157937449. The next prime is 157937537. The reversal of 157937493 is 394739751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (157937449) and next prime (157937537).

It is not a de Polignac number, because 157937493 - 2²⁶ = 90828629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157937413) 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 in 15 ways as a sum of consecutive naturals, for example, 30868 + ... + 35618.

It is an arithmetic number, because the mean of its divisors is an integer number (15054336).

Almost surely, 2^157937493 is an apocalyptic number.

It is an amenable number.

157937493 is a deficient number, since it is larger than the sum of its proper divisors (82931883).

157937493 is a wasteful number, since it uses less digits than its factorization.

157937493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344.

The product of its digits is 714420, while the sum is 48.

The square root of 157937493 is about 12567.3184490567. The cubic root of 157937493 is about 540.5407169578.

The spelling of 157937493 in words is "one hundred fifty-seven million, nine hundred thirty-seven thousand, four hundred ninety-three".