189421711 has 2 divisors, whose sum is σ = 189421712. Its totient is φ = 189421710.

The previous prime is 189421699. The next prime is 189421717. The reversal of 189421711 is 117124981.

189421711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189421711 - 2¹¹ = 189419663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189421717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94710855 + 94710856.

It is an arithmetic number, because the mean of its divisors is an integer number (94710856).

Almost surely, 2^189421711 is an apocalyptic number.

189421711 is a deficient number, since it is larger than the sum of its proper divisors (1).

189421711 is an equidigital number, since it uses as much as digits as its factorization.

189421711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 34.

The square root of 189421711 is about 13763.0560196491. The cubic root of 189421711 is about 574.3058653459.

The spelling of 189421711 in words is "one hundred eighty-nine million, four hundred twenty-one thousand, seven hundred eleven".