3869798142 has 64 divisors (see below), whose sum is σ = 9053130240. Its totient is φ = 1079975424.

The previous prime is 3869798131. The next prime is 3869798171. The reversal of 3869798142 is 2418979683.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304018 + ... + 316490.

It is an arithmetic number, because the mean of its divisors is an integer number (141455160).

Almost surely, 2^3869798142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3869798142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4526565120).

3869798142 is an abundant number, since it is smaller than the sum of its proper divisors (5183332098).

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

3869798142 is a wasteful number, since it uses less digits than its factorization.

3869798142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12657.

The product of its digits is 5225472, while the sum is 57.

The square root of 3869798142 is about 62207.7016292999. The cubic root of 3869798142 is about 1569.9871720590.

It can be divided in two parts, 3869 and 798142, that added together give a triangular number (802011 = T₁₂₆₆).

The spelling of 3869798142 in words is "three billion, eight hundred sixty-nine million, seven hundred ninety-eight thousand, one hundred forty-two".