1115707161 has 32 divisors (see below), whose sum is σ = 1650440448. Its totient is φ = 666828800.

The previous prime is 1115707123. The next prime is 1115707171. The reversal of 1115707161 is 1617075111.

It is a cyclic number.

It is not a de Polignac number, because 1115707161 - 2⁶ = 1115707097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115707171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299611 + ... + 303311.

It is an arithmetic number, because the mean of its divisors is an integer number (51576264).

Almost surely, 2^1115707161 is an apocalyptic number.

It is an amenable number.

1115707161 is a deficient number, since it is larger than the sum of its proper divisors (534733287).

1115707161 is a wasteful number, since it uses less digits than its factorization.

1115707161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001.

The product of its (nonzero) digits is 1470, while the sum is 30.

The square root of 1115707161 is about 33402.2029363334. The cubic root of 1115707161 is about 1037.1703036402.

The spelling of 1115707161 in words is "one billion, one hundred fifteen million, seven hundred seven thousand, one hundred sixty-one".