349381157 has 2 divisors, whose sum is σ = 349381158. Its totient is φ = 349381156.

The previous prime is 349381147. The next prime is 349381169. The reversal of 349381157 is 751183943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279591841 + 69789316 = 16721^2 + 8354^2 .

It is a cyclic number.

It is not a de Polignac number, because 349381157 - 2⁸ = 349380901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349381117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174690578 + 174690579.

It is an arithmetic number, because the mean of its divisors is an integer number (174690579).

Almost surely, 2^349381157 is an apocalyptic number.

It is an amenable number.

349381157 is a deficient number, since it is larger than the sum of its proper divisors (1).

349381157 is an equidigital number, since it uses as much as digits as its factorization.

349381157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 349381157 is about 18691.7403416589. The cubic root of 349381157 is about 704.3142785037.

The spelling of 349381157 in words is "three hundred forty-nine million, three hundred eighty-one thousand, one hundred fifty-seven".