728144186947 has 2 divisors, whose sum is σ = 728144186948. Its totient is φ = 728144186946.

The previous prime is 728144186927. The next prime is 728144186963. The reversal of 728144186947 is 749681441827.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728144186947 - 2³⁵ = 693784448579 is a prime.

It is not a weakly prime, because it can be changed into another prime (728144186927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364072093473 + 364072093474.

It is an arithmetic number, because the mean of its divisors is an integer number (364072093474).

Almost surely, 2^728144186947 is an apocalyptic number.

728144186947 is a deficient number, since it is larger than the sum of its proper divisors (1).

728144186947 is an equidigital number, since it uses as much as digits as its factorization.

728144186947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21676032, while the sum is 61.

The spelling of 728144186947 in words is "seven hundred twenty-eight billion, one hundred forty-four million, one hundred eighty-six thousand, nine hundred forty-seven".