189469663 has 2 divisors, whose sum is σ = 189469664. Its totient is φ = 189469662.

The previous prime is 189469627. The next prime is 189469703. The reversal of 189469663 is 366964981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189469663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189469663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189463663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94734831 + 94734832.

It is an arithmetic number, because the mean of its divisors is an integer number (94734832).

Almost surely, 2^189469663 is an apocalyptic number.

189469663 is a deficient number, since it is larger than the sum of its proper divisors (1).

189469663 is an equidigital number, since it uses as much as digits as its factorization.

189469663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 52.

The square root of 189469663 is about 13764.7979643727. The cubic root of 189469663 is about 574.3543229931.

The spelling of 189469663 in words is "one hundred eighty-nine million, four hundred sixty-nine thousand, six hundred sixty-three".