4625521818 has 16 divisors (see below), whose sum is σ = 9262239840. Its totient is φ = 1539974576.

The previous prime is 4625521801. The next prime is 4625521819. The reversal of 4625521818 is 8181255264.

It is a self number, because there is not a number n which added to its sum of digits gives 4625521818.

It is not an unprimeable number, because it can be changed into a prime (4625521819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461133 + ... + 471056.

It is an arithmetic number, because the mean of its divisors is an integer number (578889990).

Almost surely, 2^4625521818 is an apocalyptic number.

4625521818 is an abundant number, since it is smaller than the sum of its proper divisors (4636718022).

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

4625521818 is a wasteful number, since it uses less digits than its factorization.

4625521818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933021.

The product of its digits is 153600, while the sum is 42.

The square root of 4625521818 is about 68011.1889177068. The cubic root of 4625521818 is about 1666.1735834068.

The spelling of 4625521818 in words is "four billion, six hundred twenty-five million, five hundred twenty-one thousand, eight hundred eighteen".