18330577420 has 24 divisors (see below), whose sum is σ = 40758578784. Its totient is φ = 6900923136.

The previous prime is 18330577393. The next prime is 18330577451. The reversal of 18330577420 is 2477503381.

It is a happy number.

It is a super-2 number, since 2×18330577420² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 26956392 + ... + 26957071.

It is an arithmetic number, because the mean of its divisors is an integer number (1698274116).

Almost surely, 2^18330577420 is an apocalyptic number.

18330577420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18330577420 is an abundant number, since it is smaller than the sum of its proper divisors (22428001364).

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

18330577420 is a wasteful number, since it uses less digits than its factorization.

18330577420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53913489 (or 53913487 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 18330577420 in words is "eighteen billion, three hundred thirty million, five hundred seventy-seven thousand, four hundred twenty".