161371115 has 8 divisors (see below), whose sum is σ = 193758048. Its totient is φ = 129021760.

The previous prime is 161371081. The next prime is 161371117. The reversal of 161371115 is 511173161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161371115 - 2¹⁴ = 161354731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161371117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130 + ... + 18000.

It is an arithmetic number, because the mean of its divisors is an integer number (24219756).

Almost surely, 2^161371115 is an apocalyptic number.

161371115 is a deficient number, since it is larger than the sum of its proper divisors (32386933).

161371115 is a wasteful number, since it uses less digits than its factorization.

161371115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18789.

The product of its digits is 630, while the sum is 26.

The square root of 161371115 is about 12703.1931025235. The cubic root of 161371115 is about 544.4298557416.

The spelling of 161371115 in words is "one hundred sixty-one million, three hundred seventy-one thousand, one hundred fifteen".