1161161617 has 36 divisors (see below), whose sum is σ = 1483854400. Its totient is φ = 889408080.

The previous prime is 1161161609. The next prime is 1161161621. The reversal of 1161161617 is 7161611611.

It is not a de Polignac number, because 1161161617 - 2³ = 1161161609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161161627) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5834884 + ... + 5835082.

Almost surely, 2^1161161617 is an apocalyptic number.

It is an amenable number.

1161161617 is a deficient number, since it is larger than the sum of its proper divisors (322692783).

1161161617 is an equidigital number, since it uses as much as digits as its factorization.

1161161617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 300 counting only the distinct ones).

The product of its digits is 1512, while the sum is 31.

The square root of 1161161617 is about 34075.8215895083. The cubic root of 1161161617 is about 1051.0681849044.

The spelling of 1161161617 in words is "one billion, one hundred sixty-one million, one hundred sixty-one thousand, six hundred seventeen".