1998299523150 has 96 divisors (see below), whose sum is σ = 6293057575680. Its totient is φ = 456754174560.

The previous prime is 1998299523091. The next prime is 1998299523203. The reversal of 1998299523150 is 513259928991.

1998299523150 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 2 + 99 + 523 + 15 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105720684 + ... + 105739583.

It is an arithmetic number, because the mean of its divisors is an integer number (65552683080).

Almost surely, 2^{1998299523150} is an apocalyptic number.

1998299523150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1998299523150 is an abundant number, since it is smaller than the sum of its proper divisors (4294758052530).

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

1998299523150 is a wasteful number, since it uses less digits than its factorization.

1998299523150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211460295 (or 211460284 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 63.

The spelling of 1998299523150 in words is "one trillion, nine hundred ninety-eight billion, two hundred ninety-nine million, five hundred twenty-three thousand, one hundred fifty".