4636989436689 has 15 divisors (see below), whose sum is σ = 6926889714393. Its totient is φ = 3091313370924.

The previous prime is 4636989436669. The next prime is 4636989436691. The reversal of 4636989436689 is 9866349896364.

It is a happy number.

The square root of 4636989436689 is 2153367.

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

4636989436689 is a `hidden beast` number, since 4 + 6 + 3 + 6 + 98 + 94 + 366 + 89 = 666.

4636989436689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4636989436689 - 2¹¹ = 4636989434641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (4636989436669) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 19260672 + ... + 19499934.

Almost surely, 2^{4636989436689} is an apocalyptic number.

4636989436689 is the 2153367-th square number.

4636989436689 is the 1076684-th centered octagonal number.

It is an amenable number.

4636989436689 is a deficient number, since it is larger than the sum of its proper divisors (2289900277704).

4636989436689 is an frugal number, since it uses more digits than its factorization.

4636989436689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478538 (or 239266 counting only the distinct ones).

The product of its digits is 8707129344, while the sum is 81.

Multiplying 4636989436689 by its sum of digits (81), we get a square (375596144371809 = 19380303²).

4636989436689 divided by its sum of digits (81) gives a square (57246783169 = 239263²).

The spelling of 4636989436689 in words is "four trillion, six hundred thirty-six billion, nine hundred eighty-nine million, four hundred thirty-six thousand, six hundred eighty-nine".