149578189 has 8 divisors (see below), whose sum is σ = 159859008. Its totient is φ = 139462080.

The previous prime is 149578181. The next prime is 149578207. The reversal of 149578189 is 981875941.

149578189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149578189 - 2³ = 149578181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149578181) 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, 39297 + ... + 42934.

It is an arithmetic number, because the mean of its divisors is an integer number (19982376).

Almost surely, 2^149578189 is an apocalyptic number.

It is an amenable number.

149578189 is a deficient number, since it is larger than the sum of its proper divisors (10280819).

149578189 is a wasteful number, since it uses less digits than its factorization.

149578189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82355.

The product of its digits is 725760, while the sum is 52.

The square root of 149578189 is about 12230.2162286691. The cubic root of 149578189 is about 530.8307713762.

The spelling of 149578189 in words is "one hundred forty-nine million, five hundred seventy-eight thousand, one hundred eighty-nine".