1564601166 has 24 divisors (see below), whose sum is σ = 3481591464. Its totient is φ = 507438000.

The previous prime is 1564601153. The next prime is 1564601167. The reversal of 1564601166 is 6611064651.

It is a happy number.

1564601166 is a `hidden beast` number, since 1 + 5 + 646 + 0 + 1 + 1 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1564601166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564601167) 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 11 ways as a sum of consecutive naturals, for example, 1173960 + ... + 1175291.

It is an arithmetic number, because the mean of its divisors is an integer number (145066311).

Almost surely, 2^1564601166 is an apocalyptic number.

1564601166 is an abundant number, since it is smaller than the sum of its proper divisors (1916990298).

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

1564601166 is a wasteful number, since it uses less digits than its factorization.

1564601166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349296 (or 2349293 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1564601166 is about 39555.0397041894. The cubic root of 1564601166 is about 1160.9171220165.

The spelling of 1564601166 in words is "one billion, five hundred sixty-four million, six hundred one thousand, one hundred sixty-six".