18345346660 has 24 divisors (see below), whose sum is σ = 39566451960. Its totient is φ = 7139810304.

The previous prime is 18345346651. The next prime is 18345346693. The reversal of 18345346660 is 6664354381.

It can be written as a sum of positive squares in 4 ways, for example, as 11055260736 + 7290085924 = 105144^2 + 85382^2 .

It is a super-3 number, since 3×18345346660³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18345346660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12394765 + ... + 12396244.

It is an arithmetic number, because the mean of its divisors is an integer number (1648602165).

Almost surely, 2^18345346660 is an apocalyptic number.

18345346660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18345346660 is an abundant number, since it is smaller than the sum of its proper divisors (21221105300).

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

18345346660 is a wasteful number, since it uses less digits than its factorization.

18345346660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24791055 (or 24791053 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 18345346660 in words is "eighteen billion, three hundred forty-five million, three hundred forty-six thousand, six hundred sixty".