149508865 has 16 divisors (see below), whose sum is σ = 198933696. Its totient is φ = 106948800.

The previous prime is 149508857. The next prime is 149508871. The reversal of 149508865 is 568805941.

It is not a de Polignac number, because 149508865 - 2³ = 149508857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18927 + ... + 25636.

It is an arithmetic number, because the mean of its divisors is an integer number (12433356).

Almost surely, 2^149508865 is an apocalyptic number.

It is an amenable number.

149508865 is a deficient number, since it is larger than the sum of its proper divisors (49424831).

149508865 is a wasteful number, since it uses less digits than its factorization.

149508865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44640.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 149508865 is about 12227.3817720721. The cubic root of 149508865 is about 530.7487518448.

The spelling of 149508865 in words is "one hundred forty-nine million, five hundred eight thousand, eight hundred sixty-five".