1121109457 has 4 divisors (see below), whose sum is σ = 1207348660. Its totient is φ = 1034870256.

The previous prime is 1121109449. The next prime is 1121109503. The reversal of 1121109457 is 7549011211.

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 207619281 + 913490176 = 14409^2 + 30224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121109457 - 2³ = 1121109449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121109427) 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, 43119582 + ... + 43119607.

It is an arithmetic number, because the mean of its divisors is an integer number (301837165).

Almost surely, 2^1121109457 is an apocalyptic number.

It is an amenable number.

1121109457 is a deficient number, since it is larger than the sum of its proper divisors (86239203).

1121109457 is an equidigital number, since it uses as much as digits as its factorization.

1121109457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86239202.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1121109457 is about 33482.9726428225. The cubic root of 1121109457 is about 1038.8416148802.

The spelling of 1121109457 in words is "one billion, one hundred twenty-one million, one hundred nine thousand, four hundred fifty-seven".