189394063 has 2 divisors, whose sum is σ = 189394064. Its totient is φ = 189394062.

The previous prime is 189394061. The next prime is 189394091. The reversal of 189394063 is 360493981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189394063 - 2¹ = 189394061 is a prime.

It is a super-2 number, since 2×189394063² = 71740222199295938, which contains 22 as substring.

Together with 189394061, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189394061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94697031 + 94697032.

It is an arithmetic number, because the mean of its divisors is an integer number (94697032).

Almost surely, 2^189394063 is an apocalyptic number.

189394063 is a deficient number, since it is larger than the sum of its proper divisors (1).

189394063 is an equidigital number, since it uses as much as digits as its factorization.

189394063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 189394063 is about 13762.0515549100. The cubic root of 189394063 is about 574.2779220844.

The spelling of 189394063 in words is "one hundred eighty-nine million, three hundred ninety-four thousand, sixty-three".