161146018 has 16 divisors (see below), whose sum is σ = 268018560. Its totient is φ = 72046800.

The previous prime is 161146001. The next prime is 161146039. The reversal of 161146018 is 810641161.

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 7 ways as a sum of consecutive naturals, for example, 58698 + ... + 61381.

It is an arithmetic number, because the mean of its divisors is an integer number (16751160).

Almost surely, 2^161146018 is an apocalyptic number.

161146018 is a deficient number, since it is larger than the sum of its proper divisors (106872542).

161146018 is a wasteful number, since it uses less digits than its factorization.

161146018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120153.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 161146018 is about 12694.3301516858. The cubic root of 161146018 is about 544.1765957266.

Adding to 161146018 its reverse (810641161), we get a palindrome (971787179).

The spelling of 161146018 in words is "one hundred sixty-one million, one hundred forty-six thousand, eighteen".