161285234 has 8 divisors (see below), whose sum is σ = 263921328. Its totient is φ = 73311460.

The previous prime is 161285227. The next prime is 161285237. The reversal of 161285234 is 432582161.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161285234.

It is not an unprimeable number, because it can be changed into a prime (161285237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665552 + ... + 3665595.

It is an arithmetic number, because the mean of its divisors is an integer number (32990166).

Almost surely, 2^161285234 is an apocalyptic number.

161285234 is a deficient number, since it is larger than the sum of its proper divisors (102636094).

161285234 is a wasteful number, since it uses less digits than its factorization.

161285234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331160.

The product of its digits is 11520, while the sum is 32.

The square root of 161285234 is about 12699.8123608186. The cubic root of 161285234 is about 544.3332575423. Note that the first 3 decimals are identical.

The spelling of 161285234 in words is "one hundred sixty-one million, two hundred eighty-five thousand, two hundred thirty-four".