4163791638 has 32 divisors (see below), whose sum is σ = 8620680960. Its totient is φ = 1339147040.

The previous prime is 4163791627. The next prime is 4163791679. The reversal of 4163791638 is 8361973614.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272173 + ... + 287063.

It is an arithmetic number, because the mean of its divisors is an integer number (269396280).

Almost surely, 2^4163791638 is an apocalyptic number.

4163791638 is an abundant number, since it is smaller than the sum of its proper divisors (4456889322).

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

4163791638 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 4163791638 = (1847396316)₁₁.

4163791638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16532.

The product of its digits is 653184, while the sum is 48.

The square root of 4163791638 is about 64527.4487175806. The cubic root of 4163791638 is about 1608.7787812300.

The spelling of 4163791638 in words is "four billion, one hundred sixty-three million, seven hundred ninety-one thousand, six hundred thirty-eight".