3843781964 has 24 divisors (see below), whose sum is σ = 7476589008. Its totient is φ = 1714207040.

The previous prime is 3843781937. The next prime is 3843781967. The reversal of 3843781964 is 4691873483.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (3843781967) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 821807 + ... + 826470.

It is an arithmetic number, because the mean of its divisors is an integer number (311524542).

Almost surely, 2^3843781964 is an apocalyptic number.

It is an amenable number.

3843781964 is a deficient number, since it is larger than the sum of its proper divisors (3632807044).

3843781964 is a wasteful number, since it uses less digits than its factorization.

3843781964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648345 (or 1648343 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 3843781964 is about 61998.2416202266. The cubic root of 3843781964 is about 1566.4609811354.

The spelling of 3843781964 in words is "three billion, eight hundred forty-three million, seven hundred eighty-one thousand, nine hundred sixty-four".