2665493937 has 12 divisors (see below), whose sum is σ = 4076638020. Its totient is φ = 1672466688.

The previous prime is 2665493923. The next prime is 2665493947. The reversal of 2665493937 is 7393945662.

2665493937 is a `hidden beast` number, since 2 + 6 + 6 + 549 + 3 + 93 + 7 = 666.

2665493937 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2013406641 + 652087296 = 44871^2 + 25536^2 .

It is not a de Polignac number, because 2665493937 - 2⁴ = 2665493921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2665493947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8710612 + ... + 8710917.

It is an arithmetic number, because the mean of its divisors is an integer number (339719835).

Almost surely, 2^2665493937 is an apocalyptic number.

It is an amenable number.

2665493937 is a deficient number, since it is larger than the sum of its proper divisors (1411144083).

2665493937 is a wasteful number, since it uses less digits than its factorization.

2665493937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17421552 (or 17421549 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The square root of 2665493937 is about 51628.4217945891. The cubic root of 2665493937 is about 1386.5192375607.

The spelling of 2665493937 in words is "two billion, six hundred sixty-five million, four hundred ninety-three thousand, nine hundred thirty-seven".