161838052 has 6 divisors (see below), whose sum is σ = 283216598. Its totient is φ = 80919024.

The previous prime is 161838049. The next prime is 161838059. The reversal of 161838052 is 250838161.

161838052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 161188416 + 649636 = 12696^2 + 806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161837999 and 161838017.

It is not an unprimeable number, because it can be changed into a prime (161838059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20229753 + ... + 20229760.

Almost surely, 2^161838052 is an apocalyptic number.

It is an amenable number.

161838052 is a deficient number, since it is larger than the sum of its proper divisors (121378546).

161838052 is a wasteful number, since it uses less digits than its factorization.

161838052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40459517 (or 40459515 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 161838052 is about 12721.5585523158. The cubic root of 161838052 is about 544.9544635522.

The spelling of 161838052 in words is "one hundred sixty-one million, eight hundred thirty-eight thousand, fifty-two".