4611820644 has 48 divisors (see below), whose sum is σ = 11999814400. Its totient is φ = 1531713888.

The previous prime is 4611820607. The next prime is 4611820699. The reversal of 4611820644 is 4460281164.

It is a happy number.

4611820644 is a `hidden beast` number, since 4 + 6 + 1 + 1 + 8 + 2 + 0 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4611820599 and 4611820608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47164 + ... + 106995.

Almost surely, 2^4611820644 is an apocalyptic number.

It is an amenable number.

4611820644 is an abundant number, since it is smaller than the sum of its proper divisors (7387993756).

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

4611820644 is a wasteful number, since it uses less digits than its factorization.

4611820644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154449 (or 154441 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 4611820644 is about 67910.3868638664. The cubic root of 4611820644 is about 1664.5268422578.

The spelling of 4611820644 in words is "four billion, six hundred eleven million, eight hundred twenty thousand, six hundred forty-four".