1161907560 has 192 divisors, whose sum is σ = 4298935680. Its totient is φ = 269406720.

The previous prime is 1161907541. The next prime is 1161907561. The reversal of 1161907560 is 657091611.

It is a happy number.

1161907560 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 90 + 7 + 560 = 666.

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 (1161907561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84702 + ... + 97458.

It is an arithmetic number, because the mean of its divisors is an integer number (22390290).

Almost surely, 2^1161907560 is an apocalyptic number.

1161907560 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 1161907560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2149467840).

1161907560 is an abundant number, since it is smaller than the sum of its proper divisors (3137028120).

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

1161907560 is a wasteful number, since it uses less digits than its factorization.

1161907560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12808 (or 12801 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 1161907560 is about 34086.7651735978. The cubic root of 1161907560 is about 1051.2932093145.

The spelling of 1161907560 in words is "one billion, one hundred sixty-one million, nine hundred seven thousand, five hundred sixty".