161849934 has 16 divisors (see below), whose sum is σ = 359666640. Its totient is φ = 53949960.

The previous prime is 161849927. The next prime is 161849953. The reversal of 161849934 is 439948161.

It is a super-2 number, since 2×161849934² = 52390802271608712, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161849934.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1498557 + ... + 1498664.

It is an arithmetic number, because the mean of its divisors is an integer number (22479165).

Almost surely, 2^161849934 is an apocalyptic number.

161849934 is an abundant number, since it is smaller than the sum of its proper divisors (197816706).

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

161849934 is a wasteful number, since it uses less digits than its factorization.

161849934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997232 (or 2997226 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 161849934 is about 12722.0255462721. The cubic root of 161849934 is about 544.9677999100.

The spelling of 161849934 in words is "one hundred sixty-one million, eight hundred forty-nine thousand, nine hundred thirty-four".