1987483788 has 18 divisors (see below), whose sum is σ = 5023917444. Its totient is φ = 662494584.

The previous prime is 1987483781. The next prime is 1987483789. The reversal of 1987483788 is 8873847891.

1987483788 is a `hidden beast` number, since 1 + 9 + 87 + 483 + 78 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1987483781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27603906 + ... + 27603977.

Almost surely, 2^1987483788 is an apocalyptic number.

1987483788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1987483788 is an abundant number, since it is smaller than the sum of its proper divisors (3036433656).

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

1987483788 is a wasteful number, since it uses less digits than its factorization.

1987483788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55207893 (or 55207888 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 63.

The square root of 1987483788 is about 44581.2044251835. The cubic root of 1987483788 is about 1257.2873083250.

The spelling of 1987483788 in words is "one billion, nine hundred eighty-seven million, four hundred eighty-three thousand, seven hundred eighty-eight".