1121601160 has 64 divisors (see below), whose sum is σ = 2664705600. Its totient is φ = 423703296.

The previous prime is 1121601031. The next prime is 1121601167. The reversal of 1121601160 is 611061211.

It is a super-2 number, since 2×1121601160² = 2515978324226691200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1121601167) 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, 261594 + ... + 265846.

It is an arithmetic number, because the mean of its divisors is an integer number (41636025).

Almost surely, 2^1121601160 is an apocalyptic number.

1121601160 is a gapful number since it is divisible by the number (10) 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 1121601160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332352800).

1121601160 is an abundant number, since it is smaller than the sum of its proper divisors (1543104440).

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

1121601160 is a wasteful number, since it uses less digits than its factorization.

1121601160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 4626 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1121601160 is about 33490.3144207396. The cubic root of 1121601160 is about 1038.9934665057.

Adding to 1121601160 its reverse (611061211), we get a palindrome (1732662371).

The spelling of 1121601160 in words is "one billion, one hundred twenty-one million, six hundred one thousand, one hundred sixty".