1987432848 has 60 divisors (see below), whose sum is σ = 5768064848. Its totient is φ = 662476320.

The previous prime is 1987432819. The next prime is 1987432879. The reversal of 1987432848 is 8482347891.

It is a happy number.

It is a super-2 number, since 2×1987432848² = 7899778650618782208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1987432794 and 1987432803.

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, 251698 + ... + 259473.

Almost surely, 2^1987432848 is an apocalyptic number.

1987432848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1987432848 is an abundant number, since it is smaller than the sum of its proper divisors (3780632000).

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

1987432848 is an equidigital number, since it uses as much as digits as its factorization.

1987432848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511194 (or 511176 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 1987432848 is about 44580.6331045220. The cubic root of 1987432848 is about 1257.2765666420.

The spelling of 1987432848 in words is "one billion, nine hundred eighty-seven million, four hundred thirty-two thousand, eight hundred forty-eight".