418640641 has 16 divisors (see below), whose sum is σ = 442810368. Its totient is φ = 395010000.

The previous prime is 418640611. The next prime is 418640659. The reversal of 418640641 is 146046814.

It is a cyclic number.

It is not a de Polignac number, because 418640641 - 2¹³ = 418632449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 418640597 and 418640606.

It is not an unprimeable number, because it can be changed into a prime (418640611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732886 + ... + 733456.

It is an arithmetic number, because the mean of its divisors is an integer number (27675648).

Almost surely, 2^418640641 is an apocalyptic number.

It is an amenable number.

418640641 is a deficient number, since it is larger than the sum of its proper divisors (24169727).

418640641 is a wasteful number, since it uses less digits than its factorization.

418640641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 418640641 is about 20460.7096895489. The cubic root of 418640641 is about 748.0784237457.

The spelling of 418640641 in words is "four hundred eighteen million, six hundred forty thousand, six hundred forty-one".