150805809 has 72 divisors (see below), whose sum is σ = 278410496. Its totient is φ = 76982400.

The previous prime is 150805799. The next prime is 150805813. The reversal of 150805809 is 908508051.

It is not a de Polignac number, because 150805809 - 2⁵ = 150805777 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150805309) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 556344 + ... + 556614.

Almost surely, 2^150805809 is an apocalyptic number.

It is an amenable number.

150805809 is a deficient number, since it is larger than the sum of its proper divisors (127604687).

150805809 is a wasteful number, since it uses less digits than its factorization.

150805809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 150805809 is about 12280.3016656758. The cubic root of 150805809 is about 532.2790301849.

The spelling of 150805809 in words is "one hundred fifty million, eight hundred five thousand, eight hundred nine".