189250637 has 2 divisors, whose sum is σ = 189250638. Its totient is φ = 189250636.

The previous prime is 189250577. The next prime is 189250639. The reversal of 189250637 is 736052981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122190916 + 67059721 = 11054^2 + 8189^2 .

It is an emirp because it is prime and its reverse (736052981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189250637 is a prime.

Together with 189250639, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 189250594 and 189250603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189250639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94625318 + 94625319.

It is an arithmetic number, because the mean of its divisors is an integer number (94625319).

Almost surely, 2^189250637 is an apocalyptic number.

It is an amenable number.

189250637 is a deficient number, since it is larger than the sum of its proper divisors (1).

189250637 is an equidigital number, since it uses as much as digits as its factorization.

189250637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 189250637 is about 13756.8396443369. The cubic root of 189250637 is about 574.1329207322.

The spelling of 189250637 in words is "one hundred eighty-nine million, two hundred fifty thousand, six hundred thirty-seven".