148138438 has 16 divisors (see below), whose sum is σ = 262709280. Its totient is φ = 61298496.

The previous prime is 148138433. The next prime is 148138451. The reversal of 148138438 is 834831841.

It is a self number, because there is not a number n which added to its sum of digits gives 148138438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148138433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182031 + ... + 182842.

It is an arithmetic number, because the mean of its divisors is an integer number (16419330).

Almost surely, 2^148138438 is an apocalyptic number.

148138438 is a deficient number, since it is larger than the sum of its proper divisors (114570842).

148138438 is a wasteful number, since it uses less digits than its factorization.

148138438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364911.

The product of its digits is 73728, while the sum is 40.

The square root of 148138438 is about 12171.2134974291. The cubic root of 148138438 is about 529.1221233123.

The spelling of 148138438 in words is "one hundred forty-eight million, one hundred thirty-eight thousand, four hundred thirty-eight".