189323437 has 2 divisors, whose sum is σ = 189323438. Its totient is φ = 189323436.

The previous prime is 189323377. The next prime is 189323447. The reversal of 189323437 is 734323981.

189323437 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 can be written as a sum of positive squares in only one way, i.e., 175589001 + 13734436 = 13251^2 + 3706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189323437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189323437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189323447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94661718 + 94661719.

It is an arithmetic number, because the mean of its divisors is an integer number (94661719).

Almost surely, 2^189323437 is an apocalyptic number.

It is an amenable number.

189323437 is a deficient number, since it is larger than the sum of its proper divisors (1).

189323437 is an equidigital number, since it uses as much as digits as its factorization.

189323437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 189323437 is about 13759.4853464801. The cubic root of 189323437 is about 574.2065294996.

The spelling of 189323437 in words is "one hundred eighty-nine million, three hundred twenty-three thousand, four hundred thirty-seven".