1836636736 has 63 divisors (see below), whose sum is σ = 4014264387. Its totient is φ = 833120640.

The previous prime is 1836636721. The next prime is 1836636749. The reversal of 1836636736 is 6376366381.

The square root of 1836636736 is 42856.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

Its product of digits (1959552) is a multiple of the sum of its prime factors (1008).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1836636736.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3771085 + ... + 3771571.

Almost surely, 2^1836636736 is an apocalyptic number.

1836636736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1836636736 is the 42856-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836636736

1836636736 is an abundant number, since it is smaller than the sum of its proper divisors (2177627651).

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

1836636736 is an frugal number, since it uses more digits than its factorization.

1836636736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 500 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 49.

The cubic root of 1836636736 is about 1224.6380685032.

Multiplying 1836636736 by its sum of digits (49), we get a square (89995200064 = 299992²).

The spelling of 1836636736 in words is "one billion, eight hundred thirty-six million, six hundred thirty-six thousand, seven hundred thirty-six".