161394879 has 8 divisors (see below), whose sum is σ = 215960112. Its totient is φ = 107213120.

The previous prime is 161394853. The next prime is 161394917. The reversal of 161394879 is 978493161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161394879 - 2⁵ = 161394847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161394829) 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, 94884 + ... + 96569.

It is an arithmetic number, because the mean of its divisors is an integer number (26995014).

Almost surely, 2^161394879 is an apocalyptic number.

161394879 is a deficient number, since it is larger than the sum of its proper divisors (54565233).

161394879 is a wasteful number, since it uses less digits than its factorization.

161394879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191737.

The product of its digits is 326592, while the sum is 48.

The square root of 161394879 is about 12704.1284234693. The cubic root of 161394879 is about 544.4565792273.

The spelling of 161394879 in words is "one hundred sixty-one million, three hundred ninety-four thousand, eight hundred seventy-nine".