18546641064 has 128 divisors (see below), whose sum is σ = 60777676800. Its totient is φ = 5128090560.

The previous prime is 18546641051. The next prime is 18546641107. The reversal of 18546641064 is 46014664581.

18546641064 is a `hidden beast` number, since 1 + 8 + 546 + 6 + 41 + 0 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150972 + ... + 244715.

It is an arithmetic number, because the mean of its divisors is an integer number (474825600).

Almost surely, 2^18546641064 is an apocalyptic number.

18546641064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18546641064 is an abundant number, since it is smaller than the sum of its proper divisors (42231035736).

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

18546641064 is a wasteful number, since it uses less digits than its factorization.

18546641064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395740 (or 395730 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 18546641064 in words is "eighteen billion, five hundred forty-six million, six hundred forty-one thousand, sixty-four".