149815 has 12 divisors (see below), whose sum is σ = 192024. Its totient is φ = 112176.

The previous prime is 149803. The next prime is 149827. The reversal of 149815 is 518941.

It is a happy number.

149815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (149803) and next prime (149827).

It is not a de Polignac number, because 149815 - 2¹³ = 141623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1764 + ... + 1846.

It is an arithmetic number, because the mean of its divisors is an integer number (16002).

2¹⁴⁹⁸¹⁵ is an apocalyptic number.

149815 is a deficient number, since it is larger than the sum of its proper divisors (42209).

149815 is an equidigital number, since it uses as much as digits as its factorization.

149815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 107 counting only the distinct ones).

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

The square root of 149815 is about 387.0594269618. The cubic root of 149815 is about 53.1110759356. Note that the first 3 decimals are identical.

The spelling of 149815 in words is "one hundred forty-nine thousand, eight hundred fifteen".