14644401894 has 48 divisors (see below), whose sum is σ = 32718932064. Its totient is φ = 4730832000.

The previous prime is 14644401887. The next prime is 14644401917. The reversal of 14644401894 is 49810444641.

It is a happy number.

14644401894 is a `hidden beast` number, since 1 + 464 + 4 + 4 + 0 + 189 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45732 + ... + 177144.

It is an arithmetic number, because the mean of its divisors is an integer number (681644418).

Almost surely, 2^14644401894 is an apocalyptic number.

14644401894 is an abundant number, since it is smaller than the sum of its proper divisors (18074530170).

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

14644401894 is a wasteful number, since it uses less digits than its factorization.

14644401894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131613 (or 131610 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 14644401894 in words is "fourteen billion, six hundred forty-four million, four hundred one thousand, eight hundred ninety-four".