189192649 has 4 divisors (see below), whose sum is σ = 189764560. Its totient is φ = 188620740.

The previous prime is 189192637. The next prime is 189192667. The reversal of 189192649 is 946291981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189192649 - 2¹¹ = 189190601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189192749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285459 + ... + 286120.

It is an arithmetic number, because the mean of its divisors is an integer number (47441140).

Almost surely, 2^189192649 is an apocalyptic number.

It is an amenable number.

189192649 is a deficient number, since it is larger than the sum of its proper divisors (571911).

189192649 is an equidigital number, since it uses as much as digits as its factorization.

189192649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571910.

The product of its digits is 279936, while the sum is 49.

The square root of 189192649 is about 13754.7318767034. The cubic root of 189192649 is about 574.0742750101.

The spelling of 189192649 in words is "one hundred eighty-nine million, one hundred ninety-two thousand, six hundred forty-nine".