349403818 has 8 divisors (see below), whose sum is σ = 525534912. Its totient is φ = 174225516.

The previous prime is 349403783. The next prime is 349403837. The reversal of 349403818 is 818304943.

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

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, 237280 + ... + 238747.

It is an arithmetic number, because the mean of its divisors is an integer number (65691864).

Almost surely, 2^349403818 is an apocalyptic number.

349403818 is a deficient number, since it is larger than the sum of its proper divisors (176131094).

349403818 is a wasteful number, since it uses less digits than its factorization.

349403818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476396.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 349403818 is about 18692.3465086650. The cubic root of 349403818 is about 704.3295055420.

The spelling of 349403818 in words is "three hundred forty-nine million, four hundred three thousand, eight hundred eighteen".