161140269 has 16 divisors (see below), whose sum is σ = 226036800. Its totient is φ = 101961216.

The previous prime is 161140261. The next prime is 161140271. The reversal of 161140269 is 962041161.

It is a happy number.

It is not a de Polignac number, because 161140269 - 2³ = 161140261 is a prime.

It is a super-2 number, since 2×161140269² = 51932372586784722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161140261) 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, 10564 + ... + 20829.

It is an arithmetic number, because the mean of its divisors is an integer number (14127300).

Almost surely, 2^161140269 is an apocalyptic number.

It is an amenable number.

161140269 is a deficient number, since it is larger than the sum of its proper divisors (64896531).

161140269 is a wasteful number, since it uses less digits than its factorization.

161140269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31484.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 161140269 is about 12694.1037099907. The cubic root of 161140269 is about 544.1701243526.

The spelling of 161140269 in words is "one hundred sixty-one million, one hundred forty thousand, two hundred sixty-nine".