3857798826 has 80 divisors (see below), whose sum is σ = 9955028160. Its totient is φ = 1093772160.

The previous prime is 3857798767. The next prime is 3857798837. The reversal of 3857798826 is 6288977583.

3857798826 is a `hidden beast` number, since 38 + 577 + 9 + 8 + 8 + 26 = 666.

It is a super-2 number, since 2×3857798826² = 29765223563773956552, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 135570 + ... + 161538.

It is an arithmetic number, because the mean of its divisors is an integer number (124437852).

Almost surely, 2^3857798826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3857798826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4977514080).

3857798826 is an abundant number, since it is smaller than the sum of its proper divisors (6097229334).

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

3857798826 is a wasteful number, since it uses less digits than its factorization.

3857798826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26121 (or 26112 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The square root of 3857798826 is about 62111.1811673228. The cubic root of 3857798826 is about 1568.3627740398.

The spelling of 3857798826 in words is "three billion, eight hundred fifty-seven million, seven hundred ninety-eight thousand, eight hundred twenty-six".