148318639 has 6 divisors (see below), whose sum is σ = 172533984. Its totient is φ = 127130220.

The previous prime is 148318627. The next prime is 148318657. The reversal of 148318639 is 936813841.

It is not a de Polignac number, because 148318639 - 2⁹ = 148318127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 148318595 and 148318604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148318669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1513407 + ... + 1513504.

It is an arithmetic number, because the mean of its divisors is an integer number (28755664).

Almost surely, 2^148318639 is an apocalyptic number.

148318639 is a deficient number, since it is larger than the sum of its proper divisors (24215345).

148318639 is an equidigital number, since it uses as much as digits as its factorization.

148318639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026925 (or 3026918 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 148318639 is about 12178.6140016013. The cubic root of 148318639 is about 529.3365841941.

The spelling of 148318639 in words is "one hundred forty-eight million, three hundred eighteen thousand, six hundred thirty-nine".