148944138 has 32 divisors (see below), whose sum is σ = 340872576. Its totient is φ = 42501888.

The previous prime is 148944121. The next prime is 148944161. The reversal of 148944138 is 831449841.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 148944138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41670 + ... + 45102.

It is an arithmetic number, because the mean of its divisors is an integer number (10652268).

Almost surely, 2^148944138 is an apocalyptic number.

148944138 is an abundant number, since it is smaller than the sum of its proper divisors (191928438).

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

148944138 is a wasteful number, since it uses less digits than its factorization.

148944138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478.

The product of its digits is 110592, while the sum is 42.

The square root of 148944138 is about 12204.2672045478. The cubic root of 148944138 is about 530.0796581349.

The spelling of 148944138 in words is "one hundred forty-eight million, nine hundred forty-four thousand, one hundred thirty-eight".