149549567 has 2 divisors, whose sum is σ = 149549568. Its totient is φ = 149549566.

The previous prime is 149549563. The next prime is 149549579. The reversal of 149549567 is 765945941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149549567 - 2² = 149549563 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 (149549563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74774783 + 74774784.

It is an arithmetic number, because the mean of its divisors is an integer number (74774784).

Almost surely, 2^149549567 is an apocalyptic number.

149549567 is a deficient number, since it is larger than the sum of its proper divisors (1).

149549567 is an equidigital number, since it uses as much as digits as its factorization.

149549567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 50.

The square root of 149549567 is about 12229.0460380195. The cubic root of 149549567 is about 530.7969108077.

The spelling of 149549567 in words is "one hundred forty-nine million, five hundred forty-nine thousand, five hundred sixty-seven".