1987543676 has 6 divisors (see below), whose sum is σ = 3478201440. Its totient is φ = 993771836.

The previous prime is 1987543669. The next prime is 1987543687. The reversal of 1987543676 is 6763457891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248442956 + ... + 248442963.

It is an arithmetic number, because the mean of its divisors is an integer number (579700240).

Almost surely, 2^1987543676 is an apocalyptic number.

It is an amenable number.

1987543676 is a deficient number, since it is larger than the sum of its proper divisors (1490657764).

1987543676 is a wasteful number, since it uses less digits than its factorization.

1987543676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496885923 (or 496885921 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 56.

The square root of 1987543676 is about 44581.8760933185. The cubic root of 1987543676 is about 1257.2999366320.

The spelling of 1987543676 in words is "one billion, nine hundred eighty-seven million, five hundred forty-three thousand, six hundred seventy-six".