349185157 has 2 divisors, whose sum is σ = 349185158. Its totient is φ = 349185156.

The previous prime is 349185139. The next prime is 349185227. The reversal of 349185157 is 751581943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254434401 + 94750756 = 15951^2 + 9734^2 .

It is a cyclic number.

It is not a de Polignac number, because 349185157 - 2²³ = 340796549 is a prime.

It is a super-2 number, since 2×349185157² = 243860547738229298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349185107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174592578 + 174592579.

It is an arithmetic number, because the mean of its divisors is an integer number (174592579).

Almost surely, 2^349185157 is an apocalyptic number.

It is an amenable number.

349185157 is a deficient number, since it is larger than the sum of its proper divisors (1).

349185157 is an equidigital number, since it uses as much as digits as its factorization.

349185157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 349185157 is about 18686.4966486498. The cubic root of 349185157 is about 704.1825489985.

The spelling of 349185157 in words is "three hundred forty-nine million, one hundred eighty-five thousand, one hundred fifty-seven".