161146238 has 16 divisors (see below), whose sum is σ = 264282480. Its totient is φ = 73084800.

The previous prime is 161146231. The next prime is 161146273. The reversal of 161146238 is 832641161.

It is a super-2 number, since 2×161146238² = 51936220043105288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161146231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2198 + ... + 18086.

It is an arithmetic number, because the mean of its divisors is an integer number (16517655).

Almost surely, 2^161146238 is an apocalyptic number.

161146238 is a deficient number, since it is larger than the sum of its proper divisors (103136242).

161146238 is a wasteful number, since it uses less digits than its factorization.

161146238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16363.

The product of its digits is 6912, while the sum is 32.

The square root of 161146238 is about 12694.3388169688. The cubic root of 161146238 is about 544.1768433670.

Adding to 161146238 its reverse (832641161), we get a palindrome (993787399).

The spelling of 161146238 in words is "one hundred sixty-one million, one hundred forty-six thousand, two hundred thirty-eight".