1396681619 has 2 divisors, whose sum is σ = 1396681620. Its totient is φ = 1396681618.

The previous prime is 1396681603. The next prime is 1396681679. The reversal of 1396681619 is 9161866931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1396681619 - 2⁴ = 1396681603 is a prime.

It is a super-2 number, since 2×1396681619² = 3901439089704922322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1396681679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698340809 + 698340810.

It is an arithmetic number, because the mean of its divisors is an integer number (698340810).

Almost surely, 2^1396681619 is an apocalyptic number.

1396681619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396681619 is an equidigital number, since it uses as much as digits as its factorization.

1396681619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 50.

The square root of 1396681619 is about 37372.2038285140. The cubic root of 1396681619 is about 1117.8043770809.

The spelling of 1396681619 in words is "one billion, three hundred ninety-six million, six hundred eighty-one thousand, six hundred nineteen".