161842292 has 12 divisors (see below), whose sum is σ = 290878980. Its totient is φ = 78734016.

The previous prime is 161842279. The next prime is 161842297. The reversal of 161842292 is 292248161.

It can be written as a sum of positive squares in 2 ways, for example, as 74718736 + 87123556 = 8644^2 + 9334^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161842297) 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, 546617 + ... + 546912.

It is an arithmetic number, because the mean of its divisors is an integer number (24239915).

Almost surely, 2^161842292 is an apocalyptic number.

It is an amenable number.

161842292 is a deficient number, since it is larger than the sum of its proper divisors (129036688).

161842292 is a wasteful number, since it uses less digits than its factorization.

161842292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093570 (or 1093568 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 161842292 is about 12721.7251974722. The cubic root of 161842292 is about 544.9592226035.

The spelling of 161842292 in words is "one hundred sixty-one million, eight hundred forty-two thousand, two hundred ninety-two".