1937664157 has 16 divisors (see below), whose sum is σ = 2280075840. Its totient is φ = 1623398400.

The previous prime is 1937664149. The next prime is 1937664161. The reversal of 1937664157 is 7514667391.

It is not a de Polignac number, because 1937664157 - 2³ = 1937664149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1937664157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1937664257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81094 + ... + 102232.

It is an arithmetic number, because the mean of its divisors is an integer number (142504740).

Almost surely, 2^1937664157 is an apocalyptic number.

It is an amenable number.

1937664157 is a deficient number, since it is larger than the sum of its proper divisors (342411683).

1937664157 is a wasteful number, since it uses less digits than its factorization.

1937664157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21804.

The product of its digits is 952560, while the sum is 49.

The square root of 1937664157 is about 44018.9068128685. The cubic root of 1937664157 is about 1246.6929452536.

The spelling of 1937664157 in words is "one billion, nine hundred thirty-seven million, six hundred sixty-four thousand, one hundred fifty-seven".