189604823 has 2 divisors, whose sum is σ = 189604824. Its totient is φ = 189604822.

The previous prime is 189604783. The next prime is 189604837. The reversal of 189604823 is 328406981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189604823 - 2¹² = 189600727 is a prime.

It is a super-2 number, since 2×189604823² = 71899977809722658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189604873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94802411 + 94802412.

It is an arithmetic number, because the mean of its divisors is an integer number (94802412).

Almost surely, 2^189604823 is an apocalyptic number.

189604823 is a deficient number, since it is larger than the sum of its proper divisors (1).

189604823 is an equidigital number, since it uses as much as digits as its factorization.

189604823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 189604823 is about 13769.7067143785. The cubic root of 189604823 is about 574.4908642509.

The spelling of 189604823 in words is "one hundred eighty-nine million, six hundred four thousand, eight hundred twenty-three".