149918 has 4 divisors (see below), whose sum is σ = 224880. Its totient is φ = 74958.

The previous prime is 149911. The next prime is 149921. The reversal of 149918 is 819941.

149918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149911) by changing a digit.

149918 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37478 + ... + 37481.

It is an arithmetic number, because the mean of its divisors is an integer number (56220).

2¹⁴⁹⁹¹⁸ is an apocalyptic number.

149918 is a deficient number, since it is larger than the sum of its proper divisors (74962).

149918 is an equidigital number, since it uses as much as digits as its factorization.

149918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74961.

The product of its digits is 2592, while the sum is 32.

The square root of 149918 is about 387.1924586042. The cubic root of 149918 is about 53.1232446940.

The spelling of 149918 in words is "one hundred forty-nine thousand, nine hundred eighteen".