161678822 has 8 divisors (see below), whose sum is σ = 253062576. Its totient is φ = 77324632.

The previous prime is 161678813. The next prime is 161678833. The reversal of 161678822 is 228876161.

161678822 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×161678822² = 52280082966615368, 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 161678822.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1757333 + ... + 1757424.

It is an arithmetic number, because the mean of its divisors is an integer number (31632822).

Almost surely, 2^161678822 is an apocalyptic number.

161678822 is a deficient number, since it is larger than the sum of its proper divisors (91383754).

161678822 is a wasteful number, since it uses less digits than its factorization.

161678822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514782.

The product of its digits is 64512, while the sum is 41.

The square root of 161678822 is about 12715.2987381343. The cubic root of 161678822 is about 544.7756807671.

The spelling of 161678822 in words is "one hundred sixty-one million, six hundred seventy-eight thousand, eight hundred twenty-two".