2131908537 has 32 divisors (see below), whose sum is σ = 3160143360. Its totient is φ = 1267499520.

The previous prime is 2131908463. The next prime is 2131908563. The reversal of 2131908537 is 7358091312.

It is not a de Polignac number, because 2131908537 - 2¹⁴ = 2131892153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131908495 and 2131908504.

It is not an unprimeable number, because it can be changed into a prime (2131908637) 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 31 ways as a sum of consecutive naturals, for example, 1309518 + ... + 1311144.

It is an arithmetic number, because the mean of its divisors is an integer number (98754480).

Almost surely, 2^2131908537 is an apocalyptic number.

It is an amenable number.

2131908537 is a deficient number, since it is larger than the sum of its proper divisors (1028234823).

2131908537 is a wasteful number, since it uses less digits than its factorization.

2131908537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 2131908537 is about 46172.5950862630. The cubic root of 2131908537 is about 1287.0325269540.

Adding to 2131908537 its reverse (7358091312), we get a palindrome (9489999849).

The spelling of 2131908537 in words is "two billion, one hundred thirty-one million, nine hundred eight thousand, five hundred thirty-seven".