161134641 has 12 divisors (see below), whose sum is σ = 235697280. Its totient is φ = 106062840.

The previous prime is 161134627. The next prime is 161134651. The reversal of 161134641 is 146431161.

161134641 is a `hidden beast` number, since 1 + 6 + 1 + 13 + 4 + 641 = 666.

It is not a de Polignac number, because 161134641 - 2⁵ = 161134609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161134601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112605 + ... + 114026.

It is an arithmetic number, because the mean of its divisors is an integer number (19641440).

Almost surely, 2^161134641 is an apocalyptic number.

It is an amenable number.

161134641 is a deficient number, since it is larger than the sum of its proper divisors (74562639).

161134641 is a wasteful number, since it uses less digits than its factorization.

161134641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226716 (or 226713 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 161134641 is about 12693.8820303326. The cubic root of 161134641 is about 544.1637890334.

The spelling of 161134641 in words is "one hundred sixty-one million, one hundred thirty-four thousand, six hundred forty-one".