3817166421 has 8 divisors (see below), whose sum is σ = 5111781280. Its totient is φ = 2533664592.

The previous prime is 3817166401. The next prime is 3817166447. The reversal of 3817166421 is 1246617183.

3817166421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3817166421 - 2⁵ = 3817166389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3817166421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3817166401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2777455 + ... + 2778828.

It is an arithmetic number, because the mean of its divisors is an integer number (638972660).

Almost surely, 2^3817166421 is an apocalyptic number.

It is an amenable number.

3817166421 is a deficient number, since it is larger than the sum of its proper divisors (1294614859).

3817166421 is a wasteful number, since it uses less digits than its factorization.

3817166421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556515.

The product of its digits is 48384, while the sum is 39.

The square root of 3817166421 is about 61783.2211931362. The cubic root of 3817166421 is about 1562.8370493032.

The spelling of 3817166421 in words is "three billion, eight hundred seventeen million, one hundred sixty-six thousand, four hundred twenty-one".