1987974592 has 56 divisors (see below), whose sum is σ = 4089105360. Its totient is φ = 957788160.

The previous prime is 1987974589. The next prime is 1987974613. The reversal of 1987974592 is 2954797891.

It is a self number, because there is not a number n which added to its sum of digits gives 1987974592.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459992 + ... + 1461352.

Almost surely, 2^1987974592 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 1987974592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2044552680).

1987974592 is an abundant number, since it is smaller than the sum of its proper divisors (2101130768).

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

1987974592 is a wasteful number, since it uses less digits than its factorization.

1987974592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2179 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 61.

The square root of 1987974592 is about 44586.7086921652. The cubic root of 1987974592 is about 1257.3907944273.

The spelling of 1987974592 in words is "one billion, nine hundred eighty-seven million, nine hundred seventy-four thousand, five hundred ninety-two".