349166138686 has 16 divisors (see below), whose sum is σ = 551537678160. Its totient is φ = 165327670080.

The previous prime is 349166138683. The next prime is 349166138689. The reversal of 349166138686 is 686831661943.

It is an interprime number because it is at equal distance from previous prime (349166138683) and next prime (349166138689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349166138681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760655 + ... + 1948906.

It is an arithmetic number, because the mean of its divisors is an integer number (34471104885).

Almost surely, 2^349166138686 is an apocalyptic number.

349166138686 is a deficient number, since it is larger than the sum of its proper divisors (202371539474).

349166138686 is a wasteful number, since it uses less digits than its factorization.

349166138686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712059.

The product of its digits is 26873856, while the sum is 61.

The spelling of 349166138686 in words is "three hundred forty-nine billion, one hundred sixty-six million, one hundred thirty-eight thousand, six hundred eighty-six".