2639093837 has 4 divisors (see below), whose sum is σ = 2639757120. Its totient is φ = 2638430556.

The previous prime is 2639093803. The next prime is 2639093917. The reversal of 2639093837 is 7383909362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2639093837 - 2²⁴ = 2622316621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639093437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325637 + ... + 333642.

It is an arithmetic number, because the mean of its divisors is an integer number (659939280).

Almost surely, 2^2639093837 is an apocalyptic number.

It is an amenable number.

2639093837 is a deficient number, since it is larger than the sum of its proper divisors (663283).

2639093837 is an equidigital number, since it uses as much as digits as its factorization.

2639093837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663282.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The square root of 2639093837 is about 51372.1114711085. Note that the first 3 decimals coincide. The cubic root of 2639093837 is about 1381.9264973547.

The spelling of 2639093837 in words is "two billion, six hundred thirty-nine million, ninety-three thousand, eight hundred thirty-seven".