161173434 has 32 divisors (see below), whose sum is σ = 330137856. Its totient is φ = 52432640.

The previous prime is 161173429. The next prime is 161173457. The reversal of 161173434 is 434371161.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 146374 + ... + 147470.

It is an arithmetic number, because the mean of its divisors is an integer number (10316808).

Almost surely, 2^161173434 is an apocalyptic number.

161173434 is an abundant number, since it is smaller than the sum of its proper divisors (168964422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161173434 is a wasteful number, since it uses less digits than its factorization.

161173434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670.

The product of its digits is 6048, while the sum is 30.

The square root of 161173434 is about 12695.4099579336. The cubic root of 161173434 is about 544.2074544880.

The spelling of 161173434 in words is "one hundred sixty-one million, one hundred seventy-three thousand, four hundred thirty-four".