628140184439 has 2 divisors, whose sum is σ = 628140184440. Its totient is φ = 628140184438.

The previous prime is 628140184403. The next prime is 628140184493. The reversal of 628140184439 is 934481041826.

Together with next prime (628140184493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628140184439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628140184499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314070092219 + 314070092220.

It is an arithmetic number, because the mean of its divisors is an integer number (314070092220).

Almost surely, 2^628140184439 is an apocalyptic number.

628140184439 is a deficient number, since it is larger than the sum of its proper divisors (1).

628140184439 is an equidigital number, since it uses as much as digits as its factorization.

628140184439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 628140184439 in words is "six hundred twenty-eight billion, one hundred forty million, one hundred eighty-four thousand, four hundred thirty-nine".