3821401864 has 16 divisors (see below), whose sum is σ = 8188718400. Its totient is φ = 1637743632.

The previous prime is 3821401849. The next prime is 3821401877. The reversal of 3821401864 is 4681041283.

It is a super-2 number, since 2×3821401864² = 29206224412365348992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34119604 + ... + 34119715.

It is an arithmetic number, because the mean of its divisors is an integer number (511794900).

Almost surely, 2^3821401864 is an apocalyptic number.

It is an amenable number.

3821401864 is an abundant number, since it is smaller than the sum of its proper divisors (4367316536).

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

3821401864 is a wasteful number, since it uses less digits than its factorization.

3821401864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68239332 (or 68239328 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 3821401864 is about 61817.4883346129. The cubic root of 3821401864 is about 1563.4148653939.

The spelling of 3821401864 in words is "three billion, eight hundred twenty-one million, four hundred one thousand, eight hundred sixty-four".