1989499676 has 18 divisors (see below), whose sum is σ = 3492320160. Its totient is φ = 991698952.

The previous prime is 1989499667. The next prime is 1989499711. The reversal of 1989499676 is 6769949891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1951895 + ... + 1952913.

Almost surely, 2^1989499676 is an apocalyptic number.

It is an amenable number.

1989499676 is a deficient number, since it is larger than the sum of its proper divisors (1502820484).

1989499676 is an equidigital number, since it uses as much as digits as its factorization.

1989499676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 1500 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 68.

The square root of 1989499676 is about 44603.8078643517. The cubic root of 1989499676 is about 1257.7122499809.

The spelling of 1989499676 in words is "one billion, nine hundred eighty-nine million, four hundred ninety-nine thousand, six hundred seventy-six".