1993515650928 has 60 divisors (see below), whose sum is σ = 5579380731600. Its totient is φ = 664468808448.

The previous prime is 1993515650887. The next prime is 1993515650977. The reversal of 1993515650928 is 8290565153991.

1993515650928 is a `hidden beast` number, since 1 + 9 + 9 + 3 + 51 + 56 + 509 + 28 = 666.

It is a super-2 number, since 2×1993515650928² (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 11 ways as a sum of consecutive naturals, for example, 2324773 + ... + 3064571.

It is an arithmetic number, because the mean of its divisors is an integer number (92989678860).

Almost surely, 2^{1993515650928} is an apocalyptic number.

1993515650928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1993515650928 is an abundant number, since it is smaller than the sum of its proper divisors (3585865080672).

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

1993515650928 is a wasteful number, since it uses less digits than its factorization.

1993515650928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758526 (or 758517 counting only the distinct ones).

The product of its (nonzero) digits is 26244000, while the sum is 63.

The spelling of 1993515650928 in words is "one trillion, nine hundred ninety-three billion, five hundred fifteen million, six hundred fifty thousand, nine hundred twenty-eight".