8191364 has 6 divisors (see below), whose sum is σ = 14334894. Its totient is φ = 4095680.

The previous prime is 8191363. The next prime is 8191387. The reversal of 8191364 is 4631918.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4656964 + 3534400 = 2158^2 + 1880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8191364.

It is not an unprimeable number, because it can be changed into a prime (8191363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023917 + ... + 1023924.

It is an arithmetic number, because the mean of its divisors is an integer number (2389149).

Almost surely, 2^8191364 is an apocalyptic number.

It is an amenable number.

8191364 is a deficient number, since it is larger than the sum of its proper divisors (6143530).

8191364 is a wasteful number, since it uses less digits than its factorization.

8191364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047845 (or 2047843 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 8191364 is about 2862.0559044156. The cubic root of 8191364 is about 201.5821509876.

The spelling of 8191364 in words is "eight million, one hundred ninety-one thousand, three hundred sixty-four".