1987358976 has 252 divisors, whose sum is σ = 6219712128. Its totient is φ = 632282112.

The previous prime is 1987358969. The next prime is 1987358981. The reversal of 1987358976 is 6798537891.

1987358976 is a `hidden beast` number, since 198 + 7 + 358 + 97 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4292121 + ... + 4292583.

Almost surely, 2^1987358976 is an apocalyptic number.

1987358976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1987358976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109856064).

1987358976 is an abundant number, since it is smaller than the sum of its proper divisors (4232353152).

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

1987358976 is an frugal number, since it uses more digits than its factorization.

1987358976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 491 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The square root of 1987358976 is about 44579.8045756147. The cubic root of 1987358976 is about 1257.2609889777.

The spelling of 1987358976 in words is "one billion, nine hundred eighty-seven million, three hundred fifty-eight thousand, nine hundred seventy-six".