1109955856 has 15 divisors (see below), whose sum is σ = 2150797701. Its totient is φ = 554911296.

The previous prime is 1109955853. The next prime is 1109955863. The reversal of 1109955856 is 6585599011.

The square root of 1109955856 is 33316.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 136515856 + 973440000 = 11684^2 + 31200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109955853) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 129100 + ... + 137428.

Almost surely, 2^1109955856 is an apocalyptic number.

1109955856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1109955856 is the 33316-th square number.

It is an amenable number.

1109955856 is a deficient number, since it is larger than the sum of its proper divisors (1040841845).

1109955856 is an frugal number, since it uses more digits than its factorization.

1109955856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666 (or 8331 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 49.

The cubic root of 1109955856 is about 1035.3850795473.

Multiplying 1109955856 by its sum of digits (49), we get a square (54387836944 = 233212²).

The spelling of 1109955856 in words is "one billion, one hundred nine million, nine hundred fifty-five thousand, eight hundred fifty-six".