1628700013 has 2 divisors, whose sum is σ = 1628700014. Its totient is φ = 1628700012.

The previous prime is 1628699987. The next prime is 1628700049. The reversal of 1628700013 is 3100078261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416619044 + 212080969 = 37638^2 + 14563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1628700013 - 2⁵ = 1628699981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628700313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814350006 + 814350007.

It is an arithmetic number, because the mean of its divisors is an integer number (814350007).

Almost surely, 2^1628700013 is an apocalyptic number.

It is an amenable number.

1628700013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628700013 is an equidigital number, since it uses as much as digits as its factorization.

1628700013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1628700013 is about 40357.1556604278. The cubic root of 1628700013 is about 1176.5589719809.

Adding to 1628700013 its reverse (3100078261), we get a palindrome (4728778274).

The spelling of 1628700013 in words is "one billion, six hundred twenty-eight million, seven hundred thousand, thirteen".