1161615667 has 16 divisors (see below), whose sum is σ = 1224426240. Its totient is φ = 1099894752.

The previous prime is 1161615617. The next prime is 1161615709. The reversal of 1161615667 is 7665161611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161615667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161615617) 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, 1164613 + ... + 1165609.

It is an arithmetic number, because the mean of its divisors is an integer number (76526640).

Almost surely, 2^1161615667 is an apocalyptic number.

1161615667 is a deficient number, since it is larger than the sum of its proper divisors (62810573).

1161615667 is a wasteful number, since it uses less digits than its factorization.

1161615667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its digits is 45360, while the sum is 40.

The square root of 1161615667 is about 34082.4832868733. The cubic root of 1161615667 is about 1051.2051670756.

The spelling of 1161615667 in words is "one billion, one hundred sixty-one million, six hundred fifteen thousand, six hundred sixty-seven".