149518 has 4 divisors (see below), whose sum is σ = 224280. Its totient is φ = 74758.

The previous prime is 149503. The next prime is 149519. The reversal of 149518 is 815941.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37378 + ... + 37381.

It is an arithmetic number, because the mean of its divisors is an integer number (56070).

2¹⁴⁹⁵¹⁸ is an apocalyptic number.

149518 is a deficient number, since it is larger than the sum of its proper divisors (74762).

149518 is an equidigital number, since it uses as much as digits as its factorization.

149518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74761.

The product of its digits is 1440, while the sum is 28.

The square root of 149518 is about 386.6755746100. The cubic root of 149518 is about 53.0759561217.

The spelling of 149518 in words is "one hundred forty-nine thousand, five hundred eighteen".