189214747 has 2 divisors, whose sum is σ = 189214748. Its totient is φ = 189214746.

The previous prime is 189214733. The next prime is 189214769. The reversal of 189214747 is 747412981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189214747 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (189214247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94607373 + 94607374.

It is an arithmetic number, because the mean of its divisors is an integer number (94607374).

Almost surely, 2^189214747 is an apocalyptic number.

189214747 is a deficient number, since it is larger than the sum of its proper divisors (1).

189214747 is an equidigital number, since it uses as much as digits as its factorization.

189214747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 43.

The square root of 189214747 is about 13755.5351404444. The cubic root of 189214747 is about 574.0966250671.

The spelling of 189214747 in words is "one hundred eighty-nine million, two hundred fourteen thousand, seven hundred forty-seven".