18999990001002 has 8 divisors (see below), whose sum is σ = 37999980002016. Its totient is φ = 6333330000332.

The previous prime is 18999990000989. The next prime is 18999990001051. The reversal of 18999990001002 is 20010009999981.

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

18999990001002 is an admirable number.

It is a super-2 number, since 2×18999990001002² (a number of 27 digits) contains 22 as substring.

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, 1583332500078 + ... + 1583332500089.

It is an arithmetic number, because the mean of its divisors is an integer number (4749997500252).

Almost surely, 2^{18999990001002} is an apocalyptic number.

18999990001002 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.

18999990001002 is a wasteful number, since it uses less digits than its factorization.

18999990001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166665000172.

The product of its (nonzero) digits is 944784, while the sum is 57.

The spelling of 18999990001002 in words is "eighteen trillion, nine hundred ninety-nine billion, nine hundred ninety million, one thousand, two".