149649618 has 8 divisors (see below), whose sum is σ = 299299248. Its totient is φ = 49883204.

The previous prime is 149649613. The next prime is 149649637. The reversal of 149649618 is 816946941.

149649618 is digitally balanced in base 3, 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.

149649618 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (149649613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12470796 + ... + 12470807.

It is an arithmetic number, because the mean of its divisors is an integer number (37412406).

Almost surely, 2^149649618 is an apocalyptic number.

149649618 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.

149649618 is a wasteful number, since it uses less digits than its factorization.

149649618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24941608.

The product of its digits is 373248, while the sum is 48.

The square root of 149649618 is about 12233.1360656211. The cubic root of 149649618 is about 530.9152548994.

The spelling of 149649618 in words is "one hundred forty-nine million, six hundred forty-nine thousand, six hundred eighteen".