149372191 has 2 divisors, whose sum is σ = 149372192. Its totient is φ = 149372190.

The previous prime is 149372177. The next prime is 149372207. The reversal of 149372191 is 191273941.

It is a weak prime.

It is an emirp because it is prime and its reverse (191273941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149372191 - 2⁵ = 149372159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149372191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149372131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74686095 + 74686096.

It is an arithmetic number, because the mean of its divisors is an integer number (74686096).

Almost surely, 2^149372191 is an apocalyptic number.

149372191 is a deficient number, since it is larger than the sum of its proper divisors (1).

149372191 is an equidigital number, since it uses as much as digits as its factorization.

149372191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 149372191 is about 12221.7916444358. The cubic root of 149372191 is about 530.5869739903.

The spelling of 149372191 in words is "one hundred forty-nine million, three hundred seventy-two thousand, one hundred ninety-one".