1992330918 has 80 divisors (see below), whose sum is σ = 4748417520. Its totient is φ = 622577664.

The previous prime is 1992330913. The next prime is 1992330931. The reversal of 1992330918 is 8190332991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992330913) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 295230 + ... + 301902.

It is an arithmetic number, because the mean of its divisors is an integer number (59355219).

Almost surely, 2^1992330918 is an apocalyptic number.

1992330918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992330918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2374208760).

1992330918 is an abundant number, since it is smaller than the sum of its proper divisors (2756086602).

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

1992330918 is a wasteful number, since it uses less digits than its factorization.

1992330918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6803 (or 6794 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1992330918 is about 44635.5342524317. The cubic root of 1992330918 is about 1258.3085808014.

The spelling of 1992330918 in words is "one billion, nine hundred ninety-two million, three hundred thirty thousand, nine hundred eighteen".