122798918 has 8 divisors (see below), whose sum is σ = 200943720. Its totient is φ = 55817680.

The previous prime is 122798911. The next prime is 122798953. The reversal of 122798918 is 819897221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122798911) 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, 2790863 + ... + 2790906.

It is an arithmetic number, because the mean of its divisors is an integer number (25117965).

Almost surely, 2^122798918 is an apocalyptic number.

122798918 is a deficient number, since it is larger than the sum of its proper divisors (78144802).

122798918 is a wasteful number, since it uses less digits than its factorization.

122798918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581782.

The product of its digits is 145152, while the sum is 47.

The square root of 122798918 is about 11081.4673216140. The cubic root of 122798918 is about 497.0478276625.

The spelling of 122798918 in words is "one hundred twenty-two million, seven hundred ninety-eight thousand, nine hundred eighteen".