348638418 has 54 divisors (see below), whose sum is σ = 789238359. Its totient is φ = 115499844.

The previous prime is 348638413. The next prime is 348638443. The reversal of 348638418 is 814836843.

348638418 is a `hidden beast` number, since 3 + 4 + 8 + 638 + 4 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 174319209 + 174319209 = 13203^2 + 13203^2 .

It is a tau number, because it is divible by the number of its divisors (54).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=13203.

It is not an unprimeable number, because it can be changed into a prime (348638413) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2138805 + ... + 2138967.

Almost surely, 2^348638418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 348638418

348638418 is an abundant number, since it is smaller than the sum of its proper divisors (440599941).

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

348638418 is an frugal number, since it uses more digits than its factorization.

348638418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 168 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 348638418 is about 18671.8616640120. The cubic root of 348638418 is about 703.8148308307.

The spelling of 348638418 in words is "three hundred forty-eight million, six hundred thirty-eight thousand, four hundred eighteen".