149253818 has 16 divisors (see below), whose sum is σ = 256132800. Its totient is φ = 63898656.

The previous prime is 149253791. The next prime is 149253833. The reversal of 149253818 is 818352941.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9605 + ... + 19767.

It is an arithmetic number, because the mean of its divisors is an integer number (16008300).

Almost surely, 2^149253818 is an apocalyptic number.

149253818 is a deficient number, since it is larger than the sum of its proper divisors (106878982).

149253818 is a wasteful number, since it uses less digits than its factorization.

149253818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221.

The product of its digits is 69120, while the sum is 41.

The square root of 149253818 is about 12216.9479822090. The cubic root of 149253818 is about 530.4467788404.

The spelling of 149253818 in words is "one hundred forty-nine million, two hundred fifty-three thousand, eight hundred eighteen".