1121925168 has 420 divisors, whose sum is σ = 4109872368. Its totient is φ = 293932800.

The previous prime is 1121925163. The next prime is 1121925197. The reversal of 1121925168 is 8615291211.

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

It is not an unprimeable number, because it can be changed into a prime (1121925163) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 7429893 + ... + 7430043.

Almost surely, 2^1121925168 is an apocalyptic number.

1121925168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121925168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2054936184).

1121925168 is an abundant number, since it is smaller than the sum of its proper divisors (2987947200).

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

1121925168 is a wasteful number, since it uses less digits than its factorization.

1121925168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 176 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 1121925168 is about 33495.1514103161. The cubic root of 1121925168 is about 1039.0935049733.

The spelling of 1121925168 in words is "one billion, one hundred twenty-one million, nine hundred twenty-five thousand, one hundred sixty-eight".