220161146 has 4 divisors (see below), whose sum is σ = 330241722. Its totient is φ = 110080572.

The previous prime is 220161133. The next prime is 220161157. The reversal of 220161146 is 641161022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 205606921 + 14554225 = 14339^2 + 3815^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55040285 + ... + 55040288.

Almost surely, 2^220161146 is an apocalyptic number.

220161146 is a deficient number, since it is larger than the sum of its proper divisors (110080576).

220161146 is a wasteful number, since it uses less digits than its factorization.

220161146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110080575.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 220161146 is about 14837.8282103548. The cubic root of 220161146 is about 603.8284328431.

The spelling of 220161146 in words is "two hundred twenty million, one hundred sixty-one thousand, one hundred forty-six".