18403890502002 has 8 divisors (see below), whose sum is σ = 36807781004016. Its totient is φ = 6134630167332.

The previous prime is 18403890501979. The next prime is 18403890502033. The reversal of 18403890502002 is 20020509830481.

It is a sphenic number, since it is the product of 3 distinct primes.

18403890502002 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533657541828 + ... + 1533657541839.

It is an arithmetic number, because the mean of its divisors is an integer number (4600972625502).

Almost surely, 2^{18403890502002} is an apocalyptic number.

18403890502002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18403890502002 is a wasteful number, since it uses less digits than its factorization.

18403890502002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067315083672.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 18403890502002 in words is "eighteen trillion, four hundred three billion, eight hundred ninety million, five hundred two thousand, two".