3820806858 has 32 divisors (see below), whose sum is σ = 8472975552. Its totient is φ = 1138838400.

The previous prime is 3820806853. The next prime is 3820806863. The reversal of 3820806858 is 8586080283.

It is an interprime number because it is at equal distance from previous prime (3820806853) and next prime (3820806863).

It is a super-2 number, since 2×3820806858² = 29197130092279664328, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3820806853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470491 + ... + 478542.

It is an arithmetic number, because the mean of its divisors is an integer number (264780486).

Almost surely, 2^3820806858 is an apocalyptic number.

3820806858 is an abundant number, since it is smaller than the sum of its proper divisors (4652168694).

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

3820806858 is a wasteful number, since it uses less digits than its factorization.

3820806858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949110.

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 3820806858 is about 61812.6755447457. The cubic root of 3820806858 is about 1563.3337180782. Note that the first 3 decimals are identical.

The spelling of 3820806858 in words is "three billion, eight hundred twenty million, eight hundred six thousand, eight hundred fifty-eight".