4618738961 has 4 divisors (see below), whose sum is σ = 4625945124. Its totient is φ = 4611532800.

The previous prime is 4618738909. The next prime is 4618738963. The reversal of 4618738961 is 1698378164.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3287875600 + 1330863361 = 57340^2 + 36481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4618738961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4618738963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3602120 + ... + 3603401.

It is an arithmetic number, because the mean of its divisors is an integer number (1156486281).

Almost surely, 2^4618738961 is an apocalyptic number.

It is an amenable number.

4618738961 is a deficient number, since it is larger than the sum of its proper divisors (7206163).

4618738961 is an equidigital number, since it uses as much as digits as its factorization.

4618738961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206162.

The product of its digits is 1741824, while the sum is 53.

The square root of 4618738961 is about 67961.3048800566. The cubic root of 4618738961 is about 1665.3587603282.

The spelling of 4618738961 in words is "four billion, six hundred eighteen million, seven hundred thirty-eight thousand, nine hundred sixty-one".