4418621331 has 4 divisors (see below), whose sum is σ = 5891495112. Its totient is φ = 2945747552.

The previous prime is 4418621297. The next prime is 4418621353. The reversal of 4418621331 is 1331268144.

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

It is a cyclic number.

It is not a de Polignac number, because 4418621331 - 2⁷ = 4418621203 is a prime.

It is a super-4 number, since 4×4418621331⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 4418621292 and 4418621301.

It is not an unprimeable number, because it can be changed into a prime (4418621381) 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, 736436886 + ... + 736436891.

It is an arithmetic number, because the mean of its divisors is an integer number (1472873778).

Almost surely, 2^4418621331 is an apocalyptic number.

4418621331 is a deficient number, since it is larger than the sum of its proper divisors (1472873781).

4418621331 is a wasteful number, since it uses less digits than its factorization.

4418621331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472873780.

The product of its digits is 13824, while the sum is 33.

The square root of 4418621331 is about 66472.7111753387. The cubic root of 4418621331 is about 1640.9509321240.

Adding to 4418621331 its reverse (1331268144), we get a palindrome (5749889475).

The spelling of 4418621331 in words is "four billion, four hundred eighteen million, six hundred twenty-one thousand, three hundred thirty-one".