349273819 has 2 divisors, whose sum is σ = 349273820. Its totient is φ = 349273818.

The previous prime is 349273811. The next prime is 349273853. The reversal of 349273819 is 918372943.

It is a weak prime.

It is an emirp because it is prime and its reverse (918372943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349273819 - 2³ = 349273811 is a prime.

It is a super-2 number, since 2×349273819² = 243984401277689522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (349273811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174636909 + 174636910.

It is an arithmetic number, because the mean of its divisors is an integer number (174636910).

Almost surely, 2^349273819 is an apocalyptic number.

349273819 is a deficient number, since it is larger than the sum of its proper divisors (1).

349273819 is an equidigital number, since it uses as much as digits as its factorization.

349273819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 349273819 is about 18688.8688528760. The cubic root of 349273819 is about 704.2421438853.

The spelling of 349273819 in words is "three hundred forty-nine million, two hundred seventy-three thousand, eight hundred nineteen".