161160765 has 32 divisors (see below), whose sum is σ = 273735936. Its totient is φ = 80686080.

The previous prime is 161160761. The next prime is 161160773. The reversal of 161160765 is 567061161.

It is not a de Polignac number, because 161160765 - 2² = 161160761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161160761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155800 + ... + 156830.

It is an arithmetic number, because the mean of its divisors is an integer number (8554248).

Almost surely, 2^161160765 is an apocalyptic number.

161160765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161160765 is a deficient number, since it is larger than the sum of its proper divisors (112575171).

161160765 is a wasteful number, since it uses less digits than its factorization.

161160765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 161160765 is about 12694.9109882661. The cubic root of 161160765 is about 544.1931950146.

The spelling of 161160765 in words is "one hundred sixty-one million, one hundred sixty thousand, seven hundred sixty-five".