149927189 has 2 divisors, whose sum is σ = 149927190. Its totient is φ = 149927188.

The previous prime is 149927171. The next prime is 149927231. The reversal of 149927189 is 981729941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149646289 + 280900 = 12233^2 + 530^2 .

It is an emirp because it is prime and its reverse (981729941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149927189 - 2¹⁶ = 149861653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149927149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74963594 + 74963595.

It is an arithmetic number, because the mean of its divisors is an integer number (74963595).

Almost surely, 2^149927189 is an apocalyptic number.

It is an amenable number.

149927189 is a deficient number, since it is larger than the sum of its proper divisors (1).

149927189 is an equidigital number, since it uses as much as digits as its factorization.

149927189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 50.

The square root of 149927189 is about 12244.4758564832. The cubic root of 149927189 is about 531.2433004184.

The spelling of 149927189 in words is "one hundred forty-nine million, nine hundred twenty-seven thousand, one hundred eighty-nine".