189485663 has 6 divisors (see below), whose sum is σ = 190509984. Its totient is φ = 188466816.

The previous prime is 189485657. The next prime is 189485713. The reversal of 189485663 is 366584981.

It is not a de Polignac number, because 189485663 - 2⁶ = 189485599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189485963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34706 + ... + 39792.

It is an arithmetic number, because the mean of its divisors is an integer number (31751664).

Almost surely, 2^189485663 is an apocalyptic number.

189485663 is a deficient number, since it is larger than the sum of its proper divisors (1024321).

189485663 is an frugal number, since it uses more digits than its factorization.

189485663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473 (or 5280 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 189485663 is about 13765.3791447966. The cubic root of 189485663 is about 574.3704898917.

The spelling of 189485663 in words is "one hundred eighty-nine million, four hundred eighty-five thousand, six hundred sixty-three".