1990371516948 has 36 divisors (see below), whose sum is σ = 5038828473588. Its totient is φ = 662453447040.

The previous prime is 1990371516929. The next prime is 1990371516977. The reversal of 1990371516948 is 8496151730991.

1990371516948 is a `hidden beast` number, since 1 + 9 + 9 + 0 + 3 + 71 + 516 + 9 + 48 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1428474355344 + 561897161604 = 1195188^2 + 749598^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41797761 + ... + 41845352.

Almost surely, 2^{1990371516948} is an apocalyptic number.

1990371516948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1990371516948 is an abundant number, since it is smaller than the sum of its proper divisors (3048456956640).

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

1990371516948 is a wasteful number, since it uses less digits than its factorization.

1990371516948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83643784 (or 83643779 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 63.

The spelling of 1990371516948 in words is "one trillion, nine hundred ninety billion, three hundred seventy-one million, five hundred sixteen thousand, nine hundred forty-eight".