1536841213636 has 27 divisors (see below), whose sum is σ = 2696462893677. Its totient is φ = 766428418560.

The previous prime is 1536841213619. The next prime is 1536841213639. The reversal of 1536841213636 is 6363121486351.

The square root of 1536841213636 is 1239694.

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

It can be written as a sum of positive squares in only one way, i.e., 1387226973636 + 149614240000 = 1177806^2 + 386800^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1536841213636.

It is not an unprimeable number, because it can be changed into a prime (1536841213639) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1589287225 + ... + 1589288191.

Almost surely, 2^{1536841213636} is an apocalyptic number.

1536841213636 is the 1239694-th square number.

It is an amenable number.

1536841213636 is a deficient number, since it is larger than the sum of its proper divisors (1159621680041).

1536841213636 is an frugal number, since it uses more digits than its factorization.

1536841213636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220 (or 1610 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

Multiplying 1536841213636 by its sum of digits (49), we get a square (75305219468164 = 8677858²).

Adding to 1536841213636 its reverse (6363121486351), we get a palindrome (7899962699987).

The spelling of 1536841213636 in words is "one trillion, five hundred thirty-six billion, eight hundred forty-one million, two hundred thirteen thousand, six hundred thirty-six".