189936463 has 2 divisors, whose sum is σ = 189936464. Its totient is φ = 189936462.

The previous prime is 189936419. The next prime is 189936479. The reversal of 189936463 is 364639981.

It is a strong prime.

It is an emirp because it is prime and its reverse (364639981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189936463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189936403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94968231 + 94968232.

It is an arithmetic number, because the mean of its divisors is an integer number (94968232).

Almost surely, 2^189936463 is an apocalyptic number.

189936463 is a deficient number, since it is larger than the sum of its proper divisors (1).

189936463 is an equidigital number, since it uses as much as digits as its factorization.

189936463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 189936463 is about 13781.7438301544. The cubic root of 189936463 is about 574.8256187020.

The spelling of 189936463 in words is "one hundred eighty-nine million, nine hundred thirty-six thousand, four hundred sixty-three".