1108945992 has 128 divisors (see below), whose sum is σ = 3466229760. Its totient is φ = 287224320.

The previous prime is 1108945973. The next prime is 1108945997. The reversal of 1108945992 is 2995498011.

It is a super-2 number, since 2×1108945992² = 2459522426345728128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1108945997) 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, 928948 + ... + 930140.

It is an arithmetic number, because the mean of its divisors is an integer number (27079920).

Almost surely, 2^1108945992 is an apocalyptic number.

1108945992 is a gapful number since it is divisible by the number (12) 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 1108945992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733114880).

1108945992 is an abundant number, since it is smaller than the sum of its proper divisors (2357283768).

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

1108945992 is a wasteful number, since it uses less digits than its factorization.

1108945992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 1108945992 is about 33300.8407101082. The cubic root of 1108945992 is about 1035.0709783525.

It can be divided in two parts, 110894 and 5992, that added together give a triangular number (116886 = T₄₈₃).

The spelling of 1108945992 in words is "one billion, one hundred eight million, nine hundred forty-five thousand, nine hundred ninety-two".