349145178 has 16 divisors (see below), whose sum is σ = 735042720. Its totient is φ = 110256336.

The previous prime is 349145149. The next prime is 349145189. The reversal of 349145178 is 871541943.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531225 + ... + 1531452.

It is an arithmetic number, because the mean of its divisors is an integer number (45940170).

Almost surely, 2^349145178 is an apocalyptic number.

349145178 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

349145178 is an abundant number, since it is smaller than the sum of its proper divisors (385897542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349145178 is a wasteful number, since it uses less digits than its factorization.

349145178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062701.

The product of its digits is 120960, while the sum is 42.

The square root of 349145178 is about 18685.4268883534. The cubic root of 349145178 is about 704.1556734875.

The spelling of 349145178 in words is "three hundred forty-nine million, one hundred forty-five thousand, one hundred seventy-eight".