2645694018 has 24 divisors (see below), whose sum is σ = 6253459056. Its totient is φ = 801725400.

The previous prime is 2645694001. The next prime is 2645694031. The reversal of 2645694018 is 8104965462.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6680848 + ... + 6681243.

It is an arithmetic number, because the mean of its divisors is an integer number (260560794).

Almost surely, 2^2645694018 is an apocalyptic number.

2645694018 is an abundant number, since it is smaller than the sum of its proper divisors (3607765038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2645694018 is a wasteful number, since it uses less digits than its factorization.

2645694018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362110 (or 13362107 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 2645694018 is about 51436.3103070195. The cubic root of 2645694018 is about 1383.0775707279.

The spelling of 2645694018 in words is "two billion, six hundred forty-five million, six hundred ninety-four thousand, eighteen".