8418203641 has 2 divisors, whose sum is σ = 8418203642. Its totient is φ = 8418203640.

The previous prime is 8418203627. The next prime is 8418203657. The reversal of 8418203641 is 1463028148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7109862400 + 1308341241 = 84320^2 + 36171^2 .

It is a cyclic number.

It is not a de Polignac number, because 8418203641 - 2⁷ = 8418203513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8418203641.

It is not a weakly prime, because it can be changed into another prime (8418203741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4209101820 + 4209101821.

It is an arithmetic number, because the mean of its divisors is an integer number (4209101821).

Almost surely, 2^8418203641 is an apocalyptic number.

It is an amenable number.

8418203641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8418203641 is an equidigital number, since it uses as much as digits as its factorization.

8418203641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 8418203641 is about 91750.7691575389. The cubic root of 8418203641 is about 2034.2600759432.

The spelling of 8418203641 in words is "eight billion, four hundred eighteen million, two hundred three thousand, six hundred forty-one".