1988764876 has 12 divisors (see below), whose sum is σ = 3977529808. Its totient is φ = 852327792.

The previous prime is 1988764867. The next prime is 1988764889. The reversal of 1988764876 is 6784678891.

1988764876 is an admirable number.

It is a super-2 number, since 2×1988764876² = 7910371464022590752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35513631 + ... + 35513686.

Almost surely, 2^1988764876 is an apocalyptic number.

It is an amenable number.

1988764876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1988764876 is a wasteful number, since it uses less digits than its factorization.

1988764876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71027328 (or 71027326 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 64.

The square root of 1988764876 is about 44595.5701387481. The cubic root of 1988764876 is about 1257.5573901481.

The spelling of 1988764876 in words is "one billion, nine hundred eighty-eight million, seven hundred sixty-four thousand, eight hundred seventy-six".