18989285092580 has 48 divisors (see below), whose sum is σ = 43503029047296. Its totient is φ = 6905146452480.

The previous prime is 18989285092579. The next prime is 18989285092649. The reversal of 18989285092580 is 8529058298981.

It is a junction number, because it is equal to n+sod(n) for n = 18989285092498 and 18989285092507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51800492 + ... + 52165788.

It is an arithmetic number, because the mean of its divisors is an integer number (906313105152).

Almost surely, 2^{18989285092580} is an apocalyptic number.

18989285092580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18989285092580 is an abundant number, since it is smaller than the sum of its proper divisors (24513743954716).

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

18989285092580 is a wasteful number, since it uses less digits than its factorization.

18989285092580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601604 (or 601602 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 74.

The spelling of 18989285092580 in words is "eighteen trillion, nine hundred eighty-nine billion, two hundred eighty-five million, ninety-two thousand, five hundred eighty".