1121172876 has 18 divisors (see below), whose sum is σ = 2834075972. Its totient is φ = 373724280.

The previous prime is 1121172869. The next prime is 1121172887. The reversal of 1121172876 is 6782711211.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1121172876² = 2514057235756222752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 31143691 = 1121172876 / (1 + 1 + 2 + 1 + 1 + 7 + 2 + 8 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1121172876.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15571810 + ... + 15571881.

Almost surely, 2^1121172876 is an apocalyptic number.

It is an amenable number.

1121172876 is an abundant number, since it is smaller than the sum of its proper divisors (1712903096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121172876 is a wasteful number, since it uses less digits than its factorization.

1121172876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31143701 (or 31143696 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The square root of 1121172876 is about 33483.9196630263. The cubic root of 1121172876 is about 1038.8612029332.

The spelling of 1121172876 in words is "one billion, one hundred twenty-one million, one hundred seventy-two thousand, eight hundred seventy-six".