149538 has 8 divisors (see below), whose sum is σ = 299088. Its totient is φ = 49844.

The previous prime is 149533. The next prime is 149543. The reversal of 149538 is 835941.

It is an interprime number because it is at equal distance from previous prime (149533) and next prime (149543).

It is a sphenic number, since it is the product of 3 distinct primes.

149538 is an admirable number.

It is a super-2 number, since 2×149538² = 44723226888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149531) by changing a digit.

149538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12456 + ... + 12467.

It is an arithmetic number, because the mean of its divisors is an integer number (37386).

2¹⁴⁹⁵³⁸ is an apocalyptic number.

149538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149538 is a wasteful number, since it uses less digits than its factorization.

149538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24928.

The product of its digits is 4320, while the sum is 30.

The square root of 149538 is about 386.7014352184. The cubic root of 149538 is about 53.0783225521.

The spelling of 149538 in words is "one hundred forty-nine thousand, five hundred thirty-eight".