3820212865 has 32 divisors (see below), whose sum is σ = 5592637440. Its totient is φ = 2446718400.

The previous prime is 3820212829. The next prime is 3820212871. The reversal of 3820212865 is 5682120283.

3820212865 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3820212865 - 2¹⁹ = 3819688577 is a prime.

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, 6760 + ... + 87670.

It is an arithmetic number, because the mean of its divisors is an integer number (174769920).

Almost surely, 2^3820212865 is an apocalyptic number.

3820212865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3820212865 is a deficient number, since it is larger than the sum of its proper divisors (1772424575).

3820212865 is a wasteful number, since it uses less digits than its factorization.

3820212865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81013.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 3820212865 is about 61807.8705748710. The cubic root of 3820212865 is about 1563.2527005126.

The spelling of 3820212865 in words is "three billion, eight hundred twenty million, two hundred twelve thousand, eight hundred sixty-five".