1988796672 has 72 divisors (see below), whose sum is σ = 5881242080. Its totient is φ = 662929920.

The previous prime is 1988796659. The next prime is 1988796673. The reversal of 1988796672 is 2766978891.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (1988796673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136954 + ... + 150777.

Almost surely, 2^1988796672 is an apocalyptic number.

1988796672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1988796672 is an abundant number, since it is smaller than the sum of its proper divisors (3892445408).

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

1988796672 is an equidigital number, since it uses as much as digits as its factorization.

1988796672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287756 (or 287736 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 1988796672 is about 44595.9266301307. The cubic root of 1988796672 is about 1257.5640919763.

The spelling of 1988796672 in words is "one billion, nine hundred eighty-eight million, seven hundred ninety-six thousand, six hundred seventy-two".