189914437 has 2 divisors, whose sum is σ = 189914438. Its totient is φ = 189914436.

The previous prime is 189914371. The next prime is 189914447. The reversal of 189914437 is 734419981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171243396 + 18671041 = 13086^2 + 4321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189914437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189914447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94957218 + 94957219.

It is an arithmetic number, because the mean of its divisors is an integer number (94957219).

Almost surely, 2^189914437 is an apocalyptic number.

It is an amenable number.

189914437 is a deficient number, since it is larger than the sum of its proper divisors (1).

189914437 is an equidigital number, since it uses as much as digits as its factorization.

189914437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 189914437 is about 13780.9447063690. The cubic root of 189914437 is about 574.8033979405.

The spelling of 189914437 in words is "one hundred eighty-nine million, nine hundred fourteen thousand, four hundred thirty-seven".