3809819470842 has 160 divisors (see below), whose sum is σ = 10645338743424. Its totient is φ = 989374435200.

The previous prime is 3809819470841. The next prime is 3809819470867. The reversal of 3809819470842 is 2480749189083.

3809819470842 is a `hidden beast` number, since 3 + 8 + 0 + 9 + 81 + 9 + 470 + 84 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 3809819470842.

It is not an unprimeable number, because it can be changed into a prime (3809819470841) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 72485092 + ... + 72537632.

Almost surely, 2^{3809819470842} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3809819470842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5322669371712).

3809819470842 is an abundant number, since it is smaller than the sum of its proper divisors (6835519272582).

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

3809819470842 is a wasteful number, since it uses less digits than its factorization.

3809819470842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58386 (or 58377 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 3809819470842 in words is "three trillion, eight hundred nine billion, eight hundred nineteen million, four hundred seventy thousand, eight hundred forty-two".