151813161 has 6 divisors (see below), whose sum is σ = 219285690. Its totient is φ = 101208768.

The previous prime is 151813153. The next prime is 151813199. The reversal of 151813161 is 161318151.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 147987225 + 3825936 = 12165^2 + 1956^2 .

It is not a de Polignac number, because 151813161 - 2³ = 151813153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151813121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8434056 + ... + 8434073.

It is an arithmetic number, because the mean of its divisors is an integer number (36547615).

Almost surely, 2^151813161 is an apocalyptic number.

It is an amenable number.

151813161 is a deficient number, since it is larger than the sum of its proper divisors (67472529).

151813161 is a wasteful number, since it uses less digits than its factorization.

151813161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16868135 (or 16868132 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 151813161 is about 12321.2483539615. The cubic root of 151813161 is about 533.4615727649.

The spelling of 151813161 in words is "one hundred fifty-one million, eight hundred thirteen thousand, one hundred sixty-one".