1110091985 has 8 divisors (see below), whose sum is σ = 1332291240. Its totient is φ = 887953024.

The previous prime is 1110091981. The next prime is 1110091991. The reversal of 1110091985 is 5891900111.

It can be written as a sum of positive squares in 4 ways, for example, as 3066001 + 1107025984 = 1751^2 + 33272^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1110091985 - 2² = 1110091981 is a prime.

It is a super-2 number, since 2×1110091985² = 2464608430322480450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1110091981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55379 + ... + 72711.

It is an arithmetic number, because the mean of its divisors is an integer number (166536405).

Almost surely, 2^1110091985 is an apocalyptic number.

It is an amenable number.

1110091985 is a deficient number, since it is larger than the sum of its proper divisors (222199255).

1110091985 is a wasteful number, since it uses less digits than its factorization.

1110091985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30147.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 1110091985 is about 33318.0429347223. The cubic root of 1110091985 is about 1035.4274056071.

The spelling of 1110091985 in words is "one billion, one hundred ten million, ninety-one thousand, nine hundred eighty-five".