1988868368 has 20 divisors (see below), whose sum is σ = 3863151180. Its totient is φ = 991926144.

The previous prime is 1988868367. The next prime is 1988868383. The reversal of 1988868368 is 8638688891.

It can be written as a sum of positive squares in 2 ways, for example, as 1546691584 + 442176784 = 39328^2 + 21028^2 .

It is not an unprimeable number, because it can be changed into a prime (1988868361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150203 + ... + 162906.

It is an arithmetic number, because the mean of its divisors is an integer number (193157559).

Almost surely, 2^1988868368 is an apocalyptic number.

It is an amenable number.

1988868368 is a deficient number, since it is larger than the sum of its proper divisors (1874282812).

1988868368 is a wasteful number, since it uses less digits than its factorization.

1988868368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313514 (or 313508 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 65.

The square root of 1988868368 is about 44596.7304631180. The cubic root of 1988868368 is about 1257.5792034979.

The spelling of 1988868368 in words is "one billion, nine hundred eighty-eight million, eight hundred sixty-eight thousand, three hundred sixty-eight".