730218133 has 2 divisors, whose sum is σ = 730218134. Its totient is φ = 730218132.

The previous prime is 730218103. The next prime is 730218233. The reversal of 730218133 is 331812037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693953649 + 36264484 = 26343^2 + 6022^2 .

It is a cyclic number.

It is not a de Polignac number, because 730218133 - 2²⁵ = 696663701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (730218103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365109066 + 365109067.

It is an arithmetic number, because the mean of its divisors is an integer number (365109067).

Almost surely, 2^730218133 is an apocalyptic number.

It is an amenable number.

730218133 is a deficient number, since it is larger than the sum of its proper divisors (1).

730218133 is an equidigital number, since it uses as much as digits as its factorization.

730218133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 730218133 is about 27022.5486029723. The cubic root of 730218133 is about 900.5010103471.

The spelling of 730218133 in words is "seven hundred thirty million, two hundred eighteen thousand, one hundred thirty-three".