1121869259 has 6 divisors (see below), whose sum is σ = 1305031644. Its totient is φ = 961602180.

The previous prime is 1121869241. The next prime is 1121869277. The reversal of 1121869259 is 9529681211.

It is an interprime number because it is at equal distance from previous prime (1121869241) and next prime (1121869277).

It is not a de Polignac number, because 1121869259 - 2¹² = 1121865163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121869289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11447597 + ... + 11447694.

It is an arithmetic number, because the mean of its divisors is an integer number (217505274).

Almost surely, 2^1121869259 is an apocalyptic number.

1121869259 is a deficient number, since it is larger than the sum of its proper divisors (183162385).

1121869259 is an equidigital number, since it uses as much as digits as its factorization.

1121869259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22895305 (or 22895298 counting only the distinct ones).

The product of its digits is 77760, while the sum is 44.

The square root of 1121869259 is about 33494.3168164392. The cubic root of 1121869259 is about 1039.0762442725.

The spelling of 1121869259 in words is "one billion, one hundred twenty-one million, eight hundred sixty-nine thousand, two hundred fifty-nine".