2259136644 has 12 divisors (see below), whose sum is σ = 5271318864. Its totient is φ = 753045544.

The previous prime is 2259136637. The next prime is 2259136661. The reversal of 2259136644 is 4466319522.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2259136596 and 2259136605.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 94130682 + ... + 94130705.

It is an arithmetic number, because the mean of its divisors is an integer number (439276572).

Almost surely, 2^2259136644 is an apocalyptic number.

It is an amenable number.

2259136644 is an abundant number, since it is smaller than the sum of its proper divisors (3012182220).

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

2259136644 is a wasteful number, since it uses less digits than its factorization.

2259136644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188261394 (or 188261392 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 2259136644 is about 47530.3760136610. The cubic root of 2259136644 is about 1312.1419891751.

The spelling of 2259136644 in words is "two billion, two hundred fifty-nine million, one hundred thirty-six thousand, six hundred forty-four".