349756344178 has 4 divisors (see below), whose sum is σ = 524634516270. Its totient is φ = 174878172088.

The previous prime is 349756344173. The next prime is 349756344193. The reversal of 349756344178 is 871443657943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 284160426489 + 65595917689 = 533067^2 + 256117^2 .

It is not an unprimeable number, because it can be changed into a prime (349756344173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87439086043 + ... + 87439086046.

Almost surely, 2^349756344178 is an apocalyptic number.

349756344178 is a deficient number, since it is larger than the sum of its proper divisors (174878172092).

349756344178 is a wasteful number, since it uses less digits than its factorization.

349756344178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174878172091.

The product of its digits is 60963840, while the sum is 61.

The spelling of 349756344178 in words is "three hundred forty-nine billion, seven hundred fifty-six million, three hundred forty-four thousand, one hundred seventy-eight".