149018687 has 2 divisors, whose sum is σ = 149018688. Its totient is φ = 149018686.

The previous prime is 149018671. The next prime is 149018707. The reversal of 149018687 is 786810941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149018687 - 2⁴ = 149018671 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 (149018627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74509343 + 74509344.

It is an arithmetic number, because the mean of its divisors is an integer number (74509344).

Almost surely, 2^149018687 is an apocalyptic number.

149018687 is a deficient number, since it is larger than the sum of its proper divisors (1).

149018687 is an equidigital number, since it uses as much as digits as its factorization.

149018687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 149018687 is about 12207.3210410802. The cubic root of 149018687 is about 530.1680812575.

The spelling of 149018687 in words is "one hundred forty-nine million, eighteen thousand, six hundred eighty-seven".