199163539 has 2 divisors, whose sum is σ = 199163540. Its totient is φ = 199163538.

The previous prime is 199163521. The next prime is 199163579. The reversal of 199163539 is 935361991.

It is a weak prime.

It is an emirp because it is prime and its reverse (935361991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199163539 - 2⁷ = 199163411 is a prime.

It is a super-2 number, since 2×199163539² = 79332230534009042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199163519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99581769 + 99581770.

It is an arithmetic number, because the mean of its divisors is an integer number (99581770).

Almost surely, 2^199163539 is an apocalyptic number.

199163539 is a deficient number, since it is larger than the sum of its proper divisors (1).

199163539 is an equidigital number, since it uses as much as digits as its factorization.

199163539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196830, while the sum is 46.

The square root of 199163539 is about 14112.5312754304. The cubic root of 199163539 is about 583.9871328168.

The spelling of 199163539 in words is "one hundred ninety-nine million, one hundred sixty-three thousand, five hundred thirty-nine".