189163811 has 8 divisors (see below), whose sum is σ = 200418624. Its totient is φ = 177923200.

The previous prime is 189163789. The next prime is 189163817. The reversal of 189163811 is 118361981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189163811 - 2⁶ = 189163747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189163817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37601 + ... + 42333.

It is an arithmetic number, because the mean of its divisors is an integer number (25052328).

Almost surely, 2^189163811 is an apocalyptic number.

189163811 is a deficient number, since it is larger than the sum of its proper divisors (11254813).

189163811 is a wasteful number, since it uses less digits than its factorization.

189163811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101.

The product of its digits is 10368, while the sum is 38.

The square root of 189163811 is about 13753.6835429640. The cubic root of 189163811 is about 574.0451054568.

The spelling of 189163811 in words is "one hundred eighty-nine million, one hundred sixty-three thousand, eight hundred eleven".