1111356889 has 4 divisors (see below), whose sum is σ = 1113639424. Its totient is φ = 1109074356.

The previous prime is 1111356881. The next prime is 1111356899. The reversal of 1111356889 is 9886531111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111356889 - 2³ = 1111356881 is a prime.

It is a super-2 number, since 2×1111356889² = 2470228269455516642, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1111356881) 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, 1140537 + ... + 1141510.

It is an arithmetic number, because the mean of its divisors is an integer number (278409856).

Almost surely, 2^1111356889 is an apocalyptic number.

It is an amenable number.

1111356889 is a deficient number, since it is larger than the sum of its proper divisors (2282535).

1111356889 is an equidigital number, since it uses as much as digits as its factorization.

1111356889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282534.

The product of its digits is 51840, while the sum is 43.

The square root of 1111356889 is about 33337.0197978164. The cubic root of 1111356889 is about 1035.8205319256.

It can be divided in two parts, 11 and 11356889, that added together give a square (11356900 = 3370²).

The spelling of 1111356889 in words is "one billion, one hundred eleven million, three hundred fifty-six thousand, eight hundred eighty-nine".