18344624620 has 24 divisors (see below), whose sum is σ = 44027099424. Its totient is φ = 6289585536.

The previous prime is 18344624591. The next prime is 18344624633. The reversal of 18344624620 is 2642644381.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65516377 + ... + 65516656.

It is an arithmetic number, because the mean of its divisors is an integer number (1834462476).

Almost surely, 2^18344624620 is an apocalyptic number.

18344624620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18344624620 is an abundant number, since it is smaller than the sum of its proper divisors (25682474804).

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

18344624620 is a wasteful number, since it uses less digits than its factorization.

18344624620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131033049 (or 131033047 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 18344624620 in words is "eighteen billion, three hundred forty-four million, six hundred twenty-four thousand, six hundred twenty".