1992899208 has 128 divisors (see below), whose sum is σ = 5349427200. Its totient is φ = 616896000.

The previous prime is 1992899203. The next prime is 1992899221. The reversal of 1992899208 is 8029982991.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1992899203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7092028 + ... + 7092308.

It is an arithmetic number, because the mean of its divisors is an integer number (41792400).

Almost surely, 2^1992899208 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 1992899208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674713600).

1992899208 is an abundant number, since it is smaller than the sum of its proper divisors (3356527992).

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

1992899208 is a wasteful number, since it uses less digits than its factorization.

1992899208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 57.

The square root of 1992899208 is about 44641.8996907614. The cubic root of 1992899208 is about 1258.4282088876.

The spelling of 1992899208 in words is "one billion, nine hundred ninety-two million, eight hundred ninety-nine thousand, two hundred eight".