1990118860802 has 16 divisors (see below), whose sum is σ = 3003383238912. Its totient is φ = 988992422880.

The previous prime is 1990118860783. The next prime is 1990118860813. The reversal of 1990118860802 is 2080688110991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2764103 + ... + 3408885.

It is an arithmetic number, because the mean of its divisors is an integer number (187711452432).

Almost surely, 2^{1990118860802} is an apocalyptic number.

1990118860802 is a deficient number, since it is larger than the sum of its proper divisors (1013264378110).

1990118860802 is a wasteful number, since it uses less digits than its factorization.

1990118860802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654193.

The product of its (nonzero) digits is 497664, while the sum is 53.

The spelling of 1990118860802 in words is "one trillion, nine hundred ninety billion, one hundred eighteen million, eight hundred sixty thousand, eight hundred two".