1992810688 has 56 divisors (see below), whose sum is σ = 4326117840. Its totient is φ = 903275520.

The previous prime is 1992810679. The next prime is 1992810697. The reversal of 1992810688 is 8860182991.

It is an interprime number because it is at equal distance from previous prime (1992810679) and next prime (1992810697).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258798 + ... + 266386.

Almost surely, 2^1992810688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992810688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2163058920).

1992810688 is an abundant number, since it is smaller than the sum of its proper divisors (2333307152).

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

1992810688 is a wasteful number, since it uses less digits than its factorization.

1992810688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985 (or 7975 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 52.

The square root of 1992810688 is about 44640.9082344882. The cubic root of 1992810688 is about 1258.4095764494.

The spelling of 1992810688 in words is "one billion, nine hundred ninety-two million, eight hundred ten thousand, six hundred eighty-eight".