149845578 has 16 divisors (see below), whose sum is σ = 299884896. Its totient is φ = 49916240.

The previous prime is 149845573. The next prime is 149845603. The reversal of 149845578 is 875548941.

It is a self number, because there is not a number n which added to its sum of digits gives 149845578.

It is not an unprimeable number, because it can be changed into a prime (149845573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3193 + ... + 17603.

It is an arithmetic number, because the mean of its divisors is an integer number (18742806).

Almost surely, 2^149845578 is an apocalyptic number.

149845578 is an abundant number, since it is smaller than the sum of its proper divisors (150039318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149845578 is a wasteful number, since it uses less digits than its factorization.

149845578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16149.

The product of its digits is 1612800, while the sum is 51.

The square root of 149845578 is about 12241.1428388039. The cubic root of 149845578 is about 531.1468910295.

The spelling of 149845578 in words is "one hundred forty-nine million, eight hundred forty-five thousand, five hundred seventy-eight".