161892146 has 8 divisors (see below), whose sum is σ = 261518124. Its totient is φ = 74719440.

The previous prime is 161892091. The next prime is 161892161. The reversal of 161892146 is 641298161.

It can be written as a sum of positive squares in 2 ways, for example, as 138321121 + 23571025 = 11761^2 + 4855^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 3113285 + ... + 3113336.

Almost surely, 2^161892146 is an apocalyptic number.

161892146 is a deficient number, since it is larger than the sum of its proper divisors (99625978).

161892146 is a wasteful number, since it uses less digits than its factorization.

161892146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226636.

The product of its digits is 20736, while the sum is 38.

The square root of 161892146 is about 12723.6844506613. The cubic root of 161892146 is about 545.0151733845.

The spelling of 161892146 in words is "one hundred sixty-one million, eight hundred ninety-two thousand, one hundred forty-six".