349687009658 has 64 divisors (see below), whose sum is σ = 628575510528. Its totient is φ = 142757933760.

The previous prime is 349687009631. The next prime is 349687009687. The reversal of 349687009658 is 856900786943.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 349687009594 and 349687009603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7266785 + ... + 7314747.

It is an arithmetic number, because the mean of its divisors is an integer number (9821492352).

Almost surely, 2^349687009658 is an apocalyptic number.

349687009658 is a deficient number, since it is larger than the sum of its proper divisors (278888500870).

349687009658 is a wasteful number, since it uses less digits than its factorization.

349687009658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48267.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 349687009658 in words is "three hundred forty-nine billion, six hundred eighty-seven million, nine thousand, six hundred fifty-eight".