2644070091 has 16 divisors (see below), whose sum is σ = 3806103840. Its totient is φ = 1623052800.

The previous prime is 2644070089. The next prime is 2644070119. The reversal of 2644070091 is 1900704462.

It is a happy number.

It is not a de Polignac number, because 2644070091 - 2¹ = 2644070089 is a prime.

It is a super-2 number, since 2×2644070091² = 13982213292241496562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2644070081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68896 + ... + 100173.

It is an arithmetic number, because the mean of its divisors is an integer number (237881490).

Almost surely, 2^2644070091 is an apocalyptic number.

2644070091 is a deficient number, since it is larger than the sum of its proper divisors (1162033749).

2644070091 is a wasteful number, since it uses less digits than its factorization.

2644070091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169486.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2644070091 is about 51420.5220801967. The cubic root of 2644070091 is about 1382.7945351379.

The spelling of 2644070091 in words is "two billion, six hundred forty-four million, seventy thousand, ninety-one".