1992158208 has 264 divisors, whose sum is σ = 6267422720. Its totient is φ = 607150080.

The previous prime is 1992158183. The next prime is 1992158213. The reversal of 1992158208 is 8028512991.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5428041 + ... + 5428407.

Almost surely, 2^1992158208 is an apocalyptic number.

1992158208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992158208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3133711360).

1992158208 is an abundant number, since it is smaller than the sum of its proper divisors (4275264512).

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

1992158208 is a wasteful number, since it uses less digits than its factorization.

1992158208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1992158208 is about 44633.5995411529. The cubic root of 1992158208 is about 1258.2722199150.

The spelling of 1992158208 in words is "one billion, nine hundred ninety-two million, one hundred fifty-eight thousand, two hundred eight".