653189947 has 2 divisors, whose sum is σ = 653189948. Its totient is φ = 653189946.

The previous prime is 653189941. The next prime is 653189987. The reversal of 653189947 is 749981356.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653189947 - 2¹⁹ = 652665659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 653189894 and 653189903.

It is not a weakly prime, because it can be changed into another prime (653189941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326594973 + 326594974.

It is an arithmetic number, because the mean of its divisors is an integer number (326594974).

Almost surely, 2^653189947 is an apocalyptic number.

653189947 is a deficient number, since it is larger than the sum of its proper divisors (1).

653189947 is an equidigital number, since it uses as much as digits as its factorization.

653189947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 653189947 is about 25557.5810083818. The cubic root of 653189947 is about 867.6538483101.

The spelling of 653189947 in words is "six hundred fifty-three million, one hundred eighty-nine thousand, nine hundred forty-seven".