149228218 has 8 divisors (see below), whose sum is σ = 224434080. Its totient is φ = 74416860.

The previous prime is 149228161. The next prime is 149228269. The reversal of 149228218 is 812822941.

It is a happy number.

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

It is a super-2 number, since 2×149228218² = 44538122094911048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97678 + ... + 99193.

It is an arithmetic number, because the mean of its divisors is an integer number (28054260).

Almost surely, 2^149228218 is an apocalyptic number.

149228218 is a deficient number, since it is larger than the sum of its proper divisors (75205862).

149228218 is a wasteful number, since it uses less digits than its factorization.

149228218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197252.

The product of its digits is 18432, while the sum is 37.

The square root of 149228218 is about 12215.9002124281. The cubic root of 149228218 is about 530.4164497134.

The spelling of 149228218 in words is "one hundred forty-nine million, two hundred twenty-eight thousand, two hundred eighteen".