1085111900 has 36 divisors (see below), whose sum is σ = 2389852248. Its totient is φ = 427563840.

The previous prime is 1085111857. The next prime is 1085111903. The reversal of 1085111900 is 91115801.

It is a super-2 number, since 2×1085111900² = 2354935671043220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1085111900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085111903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74279 + ... + 87678.

Almost surely, 2^1085111900 is an apocalyptic number.

1085111900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085111900 is an abundant number, since it is smaller than the sum of its proper divisors (1304740348).

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

1085111900 is a wasteful number, since it uses less digits than its factorization.

1085111900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162038 (or 162031 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 1085111900 is about 32941.0367171405. The cubic root of 1085111900 is about 1027.6017662932.

The spelling of 1085111900 in words is "one billion, eighty-five million, one hundred eleven thousand, nine hundred".