3896181636 has 24 divisors (see below), whose sum is σ = 9127317024. Its totient is φ = 1293552000.

The previous prime is 3896181563. The next prime is 3896181683. The reversal of 3896181636 is 6361816983.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643765 + ... + 649788.

It is an arithmetic number, because the mean of its divisors is an integer number (380304876).

Almost surely, 2^3896181636 is an apocalyptic number.

It is an amenable number.

3896181636 is an abundant number, since it is smaller than the sum of its proper divisors (5231135388).

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

3896181636 is a wasteful number, since it uses less digits than its factorization.

3896181636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293811 (or 1293809 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 3896181636 is about 62419.4011185625. The cubic root of 3896181636 is about 1573.5470448268.

The spelling of 3896181636 in words is "three billion, eight hundred ninety-six million, one hundred eighty-one thousand, six hundred thirty-six".