201830399 has 2 divisors, whose sum is σ = 201830400. Its totient is φ = 201830398.

The previous prime is 201830389. The next prime is 201830411. The reversal of 201830399 is 993038102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201830399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201830309) 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 as a sum of consecutive naturals, namely, 100915199 + 100915200.

It is an arithmetic number, because the mean of its divisors is an integer number (100915200).

Almost surely, 2^201830399 is an apocalyptic number.

201830399 is a deficient number, since it is larger than the sum of its proper divisors (1).

201830399 is an equidigital number, since it uses as much as digits as its factorization.

201830399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 201830399 is about 14206.7026082761. The cubic root of 201830399 is about 586.5821723541.

The spelling of 201830399 in words is "two hundred one million, eight hundred thirty thousand, three hundred ninety-nine".