1121794056 has 64 divisors (see below), whose sum is σ = 3129840000. Its totient is φ = 372282048.

The previous prime is 1121794013. The next prime is 1121794057. The reversal of 1121794056 is 6504971211.

It is a super-2 number, since 2×1121794056² = 2516843808153862272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1121794056.

It is not an unprimeable number, because it can be changed into a prime (1121794057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38125 + ... + 60803.

It is an arithmetic number, because the mean of its divisors is an integer number (48903750).

Almost surely, 2^1121794056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121794056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564920000).

1121794056 is an abundant number, since it is smaller than the sum of its proper divisors (2008045944).

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

1121794056 is a wasteful number, since it uses less digits than its factorization.

1121794056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22923 (or 22913 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1121794056 is about 33493.1941743394. The cubic root of 1121794056 is about 1039.0530260599.

The spelling of 1121794056 in words is "one billion, one hundred twenty-one million, seven hundred ninety-four thousand, fifty-six".