8171664388 has 12 divisors (see below), whose sum is σ = 14922169920. Its totient is φ = 3908187272.

The previous prime is 8171664383. The next prime is 8171664409. The reversal of 8171664388 is 8834661718.

It is not an unprimeable number, because it can be changed into a prime (8171664383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44411128 + ... + 44411311.

It is an arithmetic number, because the mean of its divisors is an integer number (1243514160).

Almost surely, 2^8171664388 is an apocalyptic number.

It is an amenable number.

8171664388 is a deficient number, since it is larger than the sum of its proper divisors (6750505532).

8171664388 is a wasteful number, since it uses less digits than its factorization.

8171664388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88822466 (or 88822464 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 8171664388 is about 90397.2587416234. The cubic root of 8171664388 is about 2014.2042465354.

The spelling of 8171664388 in words is "eight billion, one hundred seventy-one million, six hundred sixty-four thousand, three hundred eighty-eight".