3826478857 has 2 divisors, whose sum is σ = 3826478858. Its totient is φ = 3826478856.

The previous prime is 3826478809. The next prime is 3826478861. The reversal of 3826478857 is 7588746283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2822159376 + 1004319481 = 53124^2 + 31691^2 .

It is a cyclic number.

It is not a de Polignac number, because 3826478857 - 2⁷ = 3826478729 is a prime.

It is not a weakly prime, because it can be changed into another prime (3826478867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1913239428 + 1913239429.

It is an arithmetic number, because the mean of its divisors is an integer number (1913239429).

Almost surely, 2^3826478857 is an apocalyptic number.

It is an amenable number.

3826478857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3826478857 is an equidigital number, since it uses as much as digits as its factorization.

3826478857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18063360, while the sum is 58.

The square root of 3826478857 is about 61858.5390790956. The cubic root of 3826478857 is about 1564.1069267592.

The spelling of 3826478857 in words is "three billion, eight hundred twenty-six million, four hundred seventy-eight thousand, eight hundred fifty-seven".