149549563 has 2 divisors, whose sum is σ = 149549564. Its totient is φ = 149549562.

The previous prime is 149549537. The next prime is 149549567. The reversal of 149549563 is 365945941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149549563 - 2⁵ = 149549531 is a prime.

It is not a weakly prime, because it can be changed into another prime (149549567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74774781 + 74774782.

It is an arithmetic number, because the mean of its divisors is an integer number (74774782).

Almost surely, 2^149549563 is an apocalyptic number.

149549563 is a deficient number, since it is larger than the sum of its proper divisors (1).

149549563 is an equidigital number, since it uses as much as digits as its factorization.

149549563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 149549563 is about 12229.0458744744. The cubic root of 149549563 is about 530.7969060753.

The spelling of 149549563 in words is "one hundred forty-nine million, five hundred forty-nine thousand, five hundred sixty-three".