349813918 has 8 divisors (see below), whose sum is σ = 529535160. Its totient is φ = 173302200.

The previous prime is 349813909. The next prime is 349813943. The reversal of 349813918 is 819318943.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 802108 + ... + 802543.

It is an arithmetic number, because the mean of its divisors is an integer number (66191895).

Almost surely, 2^349813918 is an apocalyptic number.

349813918 is a deficient number, since it is larger than the sum of its proper divisors (179721242).

349813918 is a wasteful number, since it uses less digits than its factorization.

349813918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604762.

The product of its digits is 186624, while the sum is 46.

The square root of 349813918 is about 18703.3130220290. The cubic root of 349813918 is about 704.6049581670.

The spelling of 349813918 in words is "three hundred forty-nine million, eight hundred thirteen thousand, nine hundred eighteen".