161073158 has 4 divisors (see below), whose sum is σ = 241609740. Its totient is φ = 80536578.

The previous prime is 161073149. The next prime is 161073161. The reversal of 161073158 is 851370161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851370161 = 4583 ⋅185767.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40268288 + ... + 40268291.

It is an arithmetic number, because the mean of its divisors is an integer number (60402435).

Almost surely, 2^161073158 is an apocalyptic number.

161073158 is a deficient number, since it is larger than the sum of its proper divisors (80536582).

161073158 is an equidigital number, since it uses as much as digits as its factorization.

161073158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80536581.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 161073158 is about 12691.4600420913. The cubic root of 161073158 is about 544.0945693253.

The spelling of 161073158 in words is "one hundred sixty-one million, seventy-three thousand, one hundred fifty-eight".