161134259 has 16 divisors (see below), whose sum is σ = 189669984. Its totient is φ = 134956800.

The previous prime is 161134243. The next prime is 161134261. The reversal of 161134259 is 952431161.

It is not a de Polignac number, because 161134259 - 2⁴ = 161134243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161134229) 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, 121319 + ... + 122639.

It is an arithmetic number, because the mean of its divisors is an integer number (11854374).

Almost surely, 2^161134259 is an apocalyptic number.

161134259 is a deficient number, since it is larger than the sum of its proper divisors (28535725).

161134259 is a wasteful number, since it uses less digits than its factorization.

161134259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198.

The product of its digits is 6480, while the sum is 32.

The square root of 161134259 is about 12693.8669837052. The cubic root of 161134259 is about 544.1633590189.

The spelling of 161134259 in words is "one hundred sixty-one million, one hundred thirty-four thousand, two hundred fifty-nine".