161339202 has 40 divisors (see below), whose sum is σ = 363181500. Its totient is φ = 53532576.

The previous prime is 161339183. The next prime is 161339239. The reversal of 161339202 is 202933161.

It can be written as a sum of positive squares in 2 ways, for example, as 160807761 + 531441 = 12681^2 + 729^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34924 + ... + 39272.

Almost surely, 2^161339202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161339202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181590750).

161339202 is an abundant number, since it is smaller than the sum of its proper divisors (201842298).

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

161339202 is a wasteful number, since it uses less digits than its factorization.

161339202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 4583 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 161339202 is about 12701.9369389082. The cubic root of 161339202 is about 544.3939642802.

The spelling of 161339202 in words is "one hundred sixty-one million, three hundred thirty-nine thousand, two hundred two".