161678298 has 8 divisors (see below), whose sum is σ = 323356608. Its totient is φ = 53892764.

The previous prime is 161678291. The next prime is 161678311. The reversal of 161678298 is 892876161.

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

161678298 is an admirable number.

It is a super-2 number, since 2×161678298² = 52279744088353608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161678291) by changing a digit.

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, 13473186 + ... + 13473197.

It is an arithmetic number, because the mean of its divisors is an integer number (40419576).

Almost surely, 2^161678298 is an apocalyptic number.

161678298 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161678298 is a wasteful number, since it uses less digits than its factorization.

161678298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26946388.

The product of its digits is 290304, while the sum is 48.

The square root of 161678298 is about 12715.2781330178. The cubic root of 161678298 is about 544.7750922283.

The spelling of 161678298 in words is "one hundred sixty-one million, six hundred seventy-eight thousand, two hundred ninety-eight".