189024457 has 2 divisors, whose sum is σ = 189024458. Its totient is φ = 189024456.

The previous prime is 189024439. The next prime is 189024463. The reversal of 189024457 is 754420981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172896201 + 16128256 = 13149^2 + 4016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189024457 is a prime.

It is not a weakly prime, because it can be changed into another prime (189024427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94512228 + 94512229.

It is an arithmetic number, because the mean of its divisors is an integer number (94512229).

Almost surely, 2^189024457 is an apocalyptic number.

It is an amenable number.

189024457 is a deficient number, since it is larger than the sum of its proper divisors (1).

189024457 is an equidigital number, since it uses as much as digits as its factorization.

189024457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 189024457 is about 13748.6165485841. The cubic root of 189024457 is about 573.9041074984.

The spelling of 189024457 in words is "one hundred eighty-nine million, twenty-four thousand, four hundred fifty-seven".