1987233792 has 48 divisors (see below), whose sum is σ = 5298012720. Its totient is φ = 662409216.

The previous prime is 1987233791. The next prime is 1987233799. The reversal of 1987233792 is 2973327891.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1987233791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155578 + ... + 167865.

It is an arithmetic number, because the mean of its divisors is an integer number (110375265).

Almost surely, 2^1987233792 is an apocalyptic number.

1987233792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1987233792 is an abundant number, since it is smaller than the sum of its proper divisors (3310778928).

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

1987233792 is an equidigital number, since it uses as much as digits as its factorization.

1987233792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323468 (or 323448 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 1987233792 is about 44578.4005096639. The cubic root of 1987233792 is about 1257.2345900791.

The spelling of 1987233792 in words is "one billion, nine hundred eighty-seven million, two hundred thirty-three thousand, seven hundred ninety-two".