18358962820 has 24 divisors (see below), whose sum is σ = 42058715328. Its totient is φ = 6675986400.

The previous prime is 18358962773. The next prime is 18358962841. The reversal of 18358962820 is 2826985381.

It is a super-2 number, since 2×18358962820² (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, 41724696 + ... + 41725135.

It is an arithmetic number, because the mean of its divisors is an integer number (1752446472).

Almost surely, 2^18358962820 is an apocalyptic number.

18358962820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18358962820 is an abundant number, since it is smaller than the sum of its proper divisors (23699752508).

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

18358962820 is a wasteful number, since it uses less digits than its factorization.

18358962820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83449851 (or 83449849 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 18358962820 in words is "eighteen billion, three hundred fifty-eight million, nine hundred sixty-two thousand, eight hundred twenty".