819152164 has 12 divisors (see below), whose sum is σ = 1457016988. Its totient is φ = 402861600.

The previous prime is 819152137. The next prime is 819152167. The reversal of 819152164 is 461251918.

It can be written as a sum of positive squares in 2 ways, for example, as 443102500 + 376049664 = 21050^2 + 19392^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (819152167) 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, 1678347 + ... + 1678834.

Almost surely, 2^819152164 is an apocalyptic number.

It is an amenable number.

819152164 is a deficient number, since it is larger than the sum of its proper divisors (637864824).

819152164 is a wasteful number, since it uses less digits than its factorization.

819152164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357246 (or 3357244 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 819152164 is about 28620.8344392682. The cubic root of 819152164 is about 935.6674632027.

The spelling of 819152164 in words is "eight hundred nineteen million, one hundred fifty-two thousand, one hundred sixty-four".