201993719 has 2 divisors, whose sum is σ = 201993720. Its totient is φ = 201993718.

The previous prime is 201993713. The next prime is 201993739. The reversal of 201993719 is 917399102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201993719 is a prime.

It is a super-2 number, since 2×201993719² = 81602925030901922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201993713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100996859 + 100996860.

It is an arithmetic number, because the mean of its divisors is an integer number (100996860).

Almost surely, 2^201993719 is an apocalyptic number.

201993719 is a deficient number, since it is larger than the sum of its proper divisors (1).

201993719 is an equidigital number, since it uses as much as digits as its factorization.

201993719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 201993719 is about 14212.4494370253. The cubic root of 201993719 is about 586.7403493384.

The spelling of 201993719 in words is "two hundred one million, nine hundred ninety-three thousand, seven hundred nineteen".