18930446460 has 72 divisors (see below), whose sum is σ = 57444384816. Its totient is φ = 5046182400.

The previous prime is 18930446413. The next prime is 18930446467. The reversal of 18930446460 is 6464403981.

18930446460 is a `hidden beast` number, since 189 + 3 + 0 + 4 + 4 + 6 + 460 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18930446467) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 485407 + ... + 522953.

It is an arithmetic number, because the mean of its divisors is an integer number (797838678).

Almost surely, 2^18930446460 is an apocalyptic number.

18930446460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18930446460 is an abundant number, since it is smaller than the sum of its proper divisors (38513938356).

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

18930446460 is a wasteful number, since it uses less digits than its factorization.

18930446460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40363 (or 40358 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 18930446460 in words is "eighteen billion, nine hundred thirty million, four hundred forty-six thousand, four hundred sixty".