1990298019902 has 32 divisors (see below), whose sum is σ = 3005750488320. Its totient is φ = 988409278080.

The previous prime is 1990298019883. The next prime is 1990298019911. The reversal of 1990298019902 is 2099108920991.

It is a super-2 number, since 2×1990298019902² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 255391718 + ... + 255399510.

It is an arithmetic number, because the mean of its divisors is an integer number (93929702760).

Almost surely, 2^{1990298019902} is an apocalyptic number.

1990298019902 is a deficient number, since it is larger than the sum of its proper divisors (1015452468418).

1990298019902 is a wasteful number, since it uses less digits than its factorization.

1990298019902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9488.

The product of its (nonzero) digits is 1889568, while the sum is 59.

The spelling of 1990298019902 in words is "one trillion, nine hundred ninety billion, two hundred ninety-eight million, nineteen thousand, nine hundred two".