149985149 has 2 divisors, whose sum is σ = 149985150. Its totient is φ = 149985148.

The previous prime is 149985137. The next prime is 149985151. The reversal of 149985149 is 941589941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77616100 + 72369049 = 8810^2 + 8507^2 .

It is a cyclic number.

It is not a de Polignac number, because 149985149 - 2⁴ = 149985133 is a prime.

Together with 149985151, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149985097 and 149985106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149985109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74992574 + 74992575.

It is an arithmetic number, because the mean of its divisors is an integer number (74992575).

Almost surely, 2^149985149 is an apocalyptic number.

It is an amenable number.

149985149 is a deficient number, since it is larger than the sum of its proper divisors (1).

149985149 is an equidigital number, since it uses as much as digits as its factorization.

149985149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 50.

The square root of 149985149 is about 12246.8424093723. The cubic root of 149985149 is about 531.3117489655.

The spelling of 149985149 in words is "one hundred forty-nine million, nine hundred eighty-five thousand, one hundred forty-nine".