1915797984 has 96 divisors (see below), whose sum is σ = 5117533344. Its totient is φ = 627425280.

The previous prime is 1915797977. The next prime is 1915798007. The reversal of 1915797984 is 4897975191.

It is a tau number, because it is divible by the number of its divisors (96).

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, 3230392 + ... + 3230984.

It is an arithmetic number, because the mean of its divisors is an integer number (53307639).

Almost surely, 2^1915797984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1915797984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2558766672).

1915797984 is an abundant number, since it is smaller than the sum of its proper divisors (3201735360).

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

1915797984 is a wasteful number, since it uses less digits than its factorization.

1915797984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1132 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 60.

The square root of 1915797984 is about 43769.8296089898. The cubic root of 1915797984 is about 1241.9856289551.

The spelling of 1915797984 in words is "one billion, nine hundred fifteen million, seven hundred ninety-seven thousand, nine hundred eighty-four".