628247187739 has 2 divisors, whose sum is σ = 628247187740. Its totient is φ = 628247187738.

The previous prime is 628247187649. The next prime is 628247187787. The reversal of 628247187739 is 937781742826.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628247187739 is a prime.

It is not a weakly prime, because it can be changed into another prime (628247887739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314123593869 + 314123593870.

It is an arithmetic number, because the mean of its divisors is an integer number (314123593870).

Almost surely, 2^628247187739 is an apocalyptic number.

628247187739 is a deficient number, since it is larger than the sum of its proper divisors (1).

628247187739 is an equidigital number, since it uses as much as digits as its factorization.

628247187739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56899584, while the sum is 64.

The spelling of 628247187739 in words is "six hundred twenty-eight billion, two hundred forty-seven million, one hundred eighty-seven thousand, seven hundred thirty-nine".