4218657361 has 4 divisors (see below), whose sum is σ = 4262148772. Its totient is φ = 4175165952.

The previous prime is 4218657341. The next prime is 4218657383. The reversal of 4218657361 is 1637568124.

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 778131025 + 3440526336 = 27895^2 + 58656^2 .

It is a cyclic number.

It is not a de Polignac number, because 4218657361 - 2¹⁷ = 4218526289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4218657341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21745560 + ... + 21745753.

It is an arithmetic number, because the mean of its divisors is an integer number (1065537193).

Almost surely, 2^4218657361 is an apocalyptic number.

It is an amenable number.

4218657361 is a deficient number, since it is larger than the sum of its proper divisors (43491411).

4218657361 is an equidigital number, since it uses as much as digits as its factorization.

4218657361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43491410.

The product of its digits is 241920, while the sum is 43.

The square root of 4218657361 is about 64951.1921445634. The cubic root of 4218657361 is about 1615.8141901973.

The spelling of 4218657361 in words is "four billion, two hundred eighteen million, six hundred fifty-seven thousand, three hundred sixty-one".