1111728895 has 4 divisors (see below), whose sum is σ = 1334074680. Its totient is φ = 889383112.

The previous prime is 1111728887. The next prime is 1111728911. The reversal of 1111728895 is 5988271111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5988271111 = 149 ⋅40189739.

It is a cyclic number.

It is not a de Polignac number, because 1111728895 - 2³ = 1111728887 is a prime.

It is a super-2 number, since 2×1111728895² = 2471882271955842050, which contains 22 as substring.

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, 111172885 + ... + 111172894.

It is an arithmetic number, because the mean of its divisors is an integer number (333518670).

Almost surely, 2^1111728895 is an apocalyptic number.

1111728895 is a deficient number, since it is larger than the sum of its proper divisors (222345785).

1111728895 is an equidigital number, since it uses as much as digits as its factorization.

1111728895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222345784.

The product of its digits is 40320, while the sum is 43.

The square root of 1111728895 is about 33342.5988039325. The cubic root of 1111728895 is about 1035.9360929035.

The spelling of 1111728895 in words is "one billion, one hundred eleven million, seven hundred twenty-eight thousand, eight hundred ninety-five".