1636413312 has 64 divisors (see below), whose sum is σ = 4389863760. Its totient is φ = 540057600.

The previous prime is 1636413307. The next prime is 1636413367. The reversal of 1636413312 is 2133146361.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1636413312.

It is a congruent number.

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, 17688 + ... + 59880.

Almost surely, 2^1636413312 is an apocalyptic number.

1636413312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1636413312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194931880).

1636413312 is an abundant number, since it is smaller than the sum of its proper divisors (2753450448).

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

1636413312 is a wasteful number, since it uses less digits than its factorization.

1636413312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42311 (or 42299 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 1636413312 is about 40452.6057504334. The cubic root of 1636413312 is about 1178.4133880637.

Adding to 1636413312 its reverse (2133146361), we get a palindrome (3769559673).

The spelling of 1636413312 in words is "one billion, six hundred thirty-six million, four hundred thirteen thousand, three hundred twelve".