1111867885 has 4 divisors (see below), whose sum is σ = 1334241468. Its totient is φ = 889494304.

The previous prime is 1111867873. The next prime is 1111867901. The reversal of 1111867885 is 5887681111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 730134441 + 381733444 = 27021^2 + 19538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111867885 - 2⁵ = 1111867853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111186784 + ... + 111186793.

It is an arithmetic number, because the mean of its divisors is an integer number (333560367).

Almost surely, 2^1111867885 is an apocalyptic number.

It is an amenable number.

1111867885 is a deficient number, since it is larger than the sum of its proper divisors (222373583).

1111867885 is an equidigital number, since it uses as much as digits as its factorization.

1111867885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222373582.

The product of its digits is 107520, while the sum is 46.

The square root of 1111867885 is about 33344.6830094395. The cubic root of 1111867885 is about 1035.9792625282.

It can be divided in two parts, 11118 and 67885, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 1111867885 in words is "one billion, one hundred eleven million, eight hundred sixty-seven thousand, eight hundred eighty-five".