161434678 has 8 divisors (see below), whose sum is σ = 254896920. Its totient is φ = 76469040.

The previous prime is 161434667. The next prime is 161434699. The reversal of 161434678 is 876434161.

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

It is a super-2 number, since 2×161434678² = 52122310521927368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161434678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124103 + ... + 2124178.

It is an arithmetic number, because the mean of its divisors is an integer number (31862115).

Almost surely, 2^161434678 is an apocalyptic number.

161434678 is a deficient number, since it is larger than the sum of its proper divisors (93462242).

161434678 is a wasteful number, since it uses less digits than its factorization.

161434678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248302.

The product of its digits is 96768, while the sum is 40.

The square root of 161434678 is about 12705.6947074924. The cubic root of 161434678 is about 544.5013287812.

The spelling of 161434678 in words is "one hundred sixty-one million, four hundred thirty-four thousand, six hundred seventy-eight".