4521646836 has 36 divisors (see below), whose sum is σ = 13062536032. Its totient is φ = 1291899024.

The previous prime is 4521646817. The next prime is 4521646849. The reversal of 4521646836 is 6386461254.

4521646836 is a `hidden beast` number, since 4 + 521 + 6 + 46 + 83 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 4521646791 and 4521646800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8971270 + ... + 8971773.

Almost surely, 2^4521646836 is an apocalyptic number.

It is an amenable number.

4521646836 is an abundant number, since it is smaller than the sum of its proper divisors (8540889196).

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

4521646836 is a wasteful number, since it uses less digits than its factorization.

4521646836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17943060 (or 17943055 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 4521646836 is about 67243.1917445923. The cubic root of 4521646836 is about 1653.6066604818.

The spelling of 4521646836 in words is "four billion, five hundred twenty-one million, six hundred forty-six thousand, eight hundred thirty-six".