149388186 has 8 divisors (see below), whose sum is σ = 298776384. Its totient is φ = 49796060.

The previous prime is 149388181. The next prime is 149388199. The reversal of 149388186 is 681883941.

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

149388186 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (149388181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12449010 + ... + 12449021.

It is an arithmetic number, because the mean of its divisors is an integer number (37347048).

Almost surely, 2^149388186 is an apocalyptic number.

149388186 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

149388186 is a wasteful number, since it uses less digits than its factorization.

149388186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24898036.

The product of its digits is 331776, while the sum is 48.

The square root of 149388186 is about 12222.4459908809. The cubic root of 149388186 is about 530.6059119994.

The spelling of 149388186 in words is "one hundred forty-nine million, three hundred eighty-eight thousand, one hundred eighty-six".