149051218 has 4 divisors (see below), whose sum is σ = 223576830. Its totient is φ = 74525608.

The previous prime is 149051191. The next prime is 149051233. The reversal of 149051218 is 812150941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143448529 + 5602689 = 11977^2 + 2367^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149051218.

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 as a sum of consecutive naturals, namely, 37262803 + ... + 37262806.

Almost surely, 2^149051218 is an apocalyptic number.

149051218 is a deficient number, since it is larger than the sum of its proper divisors (74525612).

149051218 is an equidigital number, since it uses as much as digits as its factorization.

149051218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74525611.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 149051218 is about 12208.6534064982. The cubic root of 149051218 is about 530.2066572762.

The spelling of 149051218 in words is "one hundred forty-nine million, fifty-one thousand, two hundred eighteen".