191349349 has 2 divisors, whose sum is σ = 191349350. Its totient is φ = 191349348.

The previous prime is 191349343. The next prime is 191349401. The reversal of 191349349 is 943943191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190246849 + 1102500 = 13793^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 191349349 - 2⁵ = 191349317 is a prime.

It is a super-2 number, since 2×191349349² = 73229146725447602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191349343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95674674 + 95674675.

It is an arithmetic number, because the mean of its divisors is an integer number (95674675).

Almost surely, 2^191349349 is an apocalyptic number.

It is an amenable number.

191349349 is a deficient number, since it is larger than the sum of its proper divisors (1).

191349349 is an equidigital number, since it uses as much as digits as its factorization.

191349349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 191349349 is about 13832.9081902541. The cubic root of 191349349 is about 576.2474231608.

The spelling of 191349349 in words is "one hundred ninety-one million, three hundred forty-nine thousand, three hundred forty-nine".