2730161618 has 6 divisors (see below), whose sum is σ = 4095353271. Its totient is φ = 1365043862.

The previous prime is 2730161611. The next prime is 2730161639. The reversal of 2730161618 is 8161610372.

It can be written as a sum of positive squares in only one way, i.e., 1365080809 + 1365080809 = 36947^2 + 36947^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=36947.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2730161611) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55421 + ... + 92367.

Almost surely, 2^2730161618 is an apocalyptic number.

2730161618 is a deficient number, since it is larger than the sum of its proper divisors (1365191653).

2730161618 is an frugal number, since it uses more digits than its factorization.

2730161618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73896 (or 36949 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2730161618 is about 52250.9484889987. The cubic root of 2730161618 is about 1397.6425662632.

The spelling of 2730161618 in words is "two billion, seven hundred thirty million, one hundred sixty-one thousand, six hundred eighteen".