1386621013 has 2 divisors, whose sum is σ = 1386621014. Its totient is φ = 1386621012.

The previous prime is 1386621001. The next prime is 1386621059. The reversal of 1386621013 is 3101266831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075380849 + 311240164 = 32793^2 + 17642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386621013 - 2⁵ = 1386620981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386621113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693310506 + 693310507.

It is an arithmetic number, because the mean of its divisors is an integer number (693310507).

Almost surely, 2^1386621013 is an apocalyptic number.

It is an amenable number.

1386621013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386621013 is an equidigital number, since it uses as much as digits as its factorization.

1386621013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1386621013 is about 37237.3604461970. The cubic root of 1386621013 is about 1115.1139762969.

Adding to 1386621013 its reverse (3101266831), we get a palindrome (4487887844).

The spelling of 1386621013 in words is "one billion, three hundred eighty-six million, six hundred twenty-one thousand, thirteen".