2691871937 has 12 divisors (see below), whose sum is σ = 2777301696. Its totient is φ = 2608798920.

The previous prime is 2691871921. The next prime is 2691871943. The reversal of 2691871937 is 7391781962.

It is not a de Polignac number, because 2691871937 - 2⁴ = 2691871921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2691871837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221612 + ... + 233442.

It is an arithmetic number, because the mean of its divisors is an integer number (231441808).

Almost surely, 2^2691871937 is an apocalyptic number.

It is an amenable number.

2691871937 is a deficient number, since it is larger than the sum of its proper divisors (85429759).

2691871937 is a wasteful number, since it uses less digits than its factorization.

2691871937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12028 (or 11981 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 53.

The square root of 2691871937 is about 51883.2529531447. The cubic root of 2691871937 is about 1391.0779446121.

The spelling of 2691871937 in words is "two billion, six hundred ninety-one million, eight hundred seventy-one thousand, nine hundred thirty-seven".