161078459 has 4 divisors (see below), whose sum is σ = 161196480. Its totient is φ = 160960440.

The previous prime is 161078443. The next prime is 161078479. The reversal of 161078459 is 954870161.

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

It is a cyclic number.

It is not a de Polignac number, because 161078459 - 2⁴ = 161078443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161078479) 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 3 ways as a sum of consecutive naturals, for example, 56939 + ... + 59700.

It is an arithmetic number, because the mean of its divisors is an integer number (40299120).

Almost surely, 2^161078459 is an apocalyptic number.

161078459 is a deficient number, since it is larger than the sum of its proper divisors (118021).

161078459 is a wasteful number, since it uses less digits than its factorization.

161078459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118020.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 161078459 is about 12691.6688815932. The cubic root of 161078459 is about 544.1005380700.

The spelling of 161078459 in words is "one hundred sixty-one million, seventy-eight thousand, four hundred fifty-nine".