4749828561 has 9 divisors (see below), whose sum is σ = 6861162139. Its totient is φ = 3166414536.

The previous prime is 4749828541. The next prime is 4749828569. The reversal of 4749828561 is 1658289474.

It is a happy number.

The square root of 4749828561 is 68919.

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

4749828561 is a `hidden beast` number, since 4 + 74 + 9 + 8 + 2 + 8 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2710764225 + 2039064336 = 52065^2 + 45156^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 4749828561 - 2²⁷ = 4615610833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4749828498 and 4749828507.

It is not an unprimeable number, because it can be changed into a prime (4749828569) 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, 195271 + ... + 218243.

Almost surely, 2^4749828561 is an apocalyptic number.

4749828561 is the 68919-th square number.

4749828561 is the 34460-th centered octagonal number.

It is an amenable number.

4749828561 is a deficient number, since it is larger than the sum of its proper divisors (2111333578).

4749828561 is an frugal number, since it uses more digits than its factorization.

4749828561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45952 (or 22976 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The cubic root of 4749828561 is about 1680.9674795175.

The spelling of 4749828561 in words is "four billion, seven hundred forty-nine million, eight hundred twenty-eight thousand, five hundred sixty-one".