1088056891 has 4 divisors (see below), whose sum is σ = 1117463872. Its totient is φ = 1058649912.

The previous prime is 1088056873. The next prime is 1088056901. The reversal of 1088056891 is 1986508801.

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

It is a cyclic number.

It is not a de Polignac number, because 1088056891 - 2¹⁷ = 1087925819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1088056591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14703435 + ... + 14703508.

It is an arithmetic number, because the mean of its divisors is an integer number (279365968).

Almost surely, 2^1088056891 is an apocalyptic number.

1088056891 is a deficient number, since it is larger than the sum of its proper divisors (29406981).

1088056891 is an equidigital number, since it uses as much as digits as its factorization.

1088056891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29406980.

The product of its (nonzero) digits is 138240, while the sum is 46.

The square root of 1088056891 is about 32985.7073745585. The cubic root of 1088056891 is about 1028.5305627622.

The spelling of 1088056891 in words is "one billion, eighty-eight million, fifty-six thousand, eight hundred ninety-one".