161113154 has 8 divisors (see below), whose sum is σ = 250003260. Its totient is φ = 77778736.

The previous prime is 161113151. The next prime is 161113157. The reversal of 161113154 is 451311161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161113151) and next prime (161113157).

It can be written as a sum of positive squares in 2 ways, for example, as 158130625 + 2982529 = 12575^2 + 1727^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161113151) 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 3 ways as a sum of consecutive naturals, for example, 1388849 + ... + 1388964.

Almost surely, 2^161113154 is an apocalyptic number.

161113154 is a deficient number, since it is larger than the sum of its proper divisors (88890106).

161113154 is a wasteful number, since it uses less digits than its factorization.

161113154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777844.

The product of its digits is 360, while the sum is 23.

The square root of 161113154 is about 12693.0356495206. The cubic root of 161113154 is about 544.1396002204.

The spelling of 161113154 in words is "one hundred sixty-one million, one hundred thirteen thousand, one hundred fifty-four".