149646609 has 20 divisors (see below), whose sum is σ = 255482304. Its totient is φ = 85512024.

The previous prime is 149646599. The next prime is 149646617. The reversal of 149646609 is 906646941.

149646609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149646609 - 2⁸ = 149646353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149646649) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 131397 + ... + 132530.

Almost surely, 2^149646609 is an apocalyptic number.

It is an amenable number.

149646609 is a deficient number, since it is larger than the sum of its proper divisors (105835695).

149646609 is an equidigital number, since it uses as much as digits as its factorization.

149646609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263946 (or 263937 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 149646609 is about 12233.0130793685. The cubic root of 149646609 is about 530.9116965103.

The spelling of 149646609 in words is "one hundred forty-nine million, six hundred forty-six thousand, six hundred nine".