1364661636 has 24 divisors (see below), whose sum is σ = 3429150144. Its totient is φ = 419895840.

The previous prime is 1364661593. The next prime is 1364661659. The reversal of 1364661636 is 6361664631.

It is a nude number because it is divisible by every one of its digits.

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, 4373760 + ... + 4374071.

It is an arithmetic number, because the mean of its divisors is an integer number (142881256).

Almost surely, 2^1364661636 is an apocalyptic number.

It is an amenable number.

1364661636 is an abundant number, since it is smaller than the sum of its proper divisors (2064488508).

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

1364661636 is a wasteful number, since it uses less digits than its factorization.

1364661636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8747851 (or 8747849 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 1364661636 is about 36941.3269388093. The cubic root of 1364661636 is about 1109.1960837602.

The spelling of 1364661636 in words is "one billion, three hundred sixty-four million, six hundred sixty-one thousand, six hundred thirty-six".