1356688819 has 2 divisors, whose sum is σ = 1356688820. Its totient is φ = 1356688818.

The previous prime is 1356688813. The next prime is 1356688831. The reversal of 1356688819 is 9188866531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1356688819 - 2⁷ = 1356688691 is a prime.

It is a super-2 number, since 2×1356688819² = 3681209103199229522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1356688819.

It is not a weakly prime, because it can be changed into another prime (1356688813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678344409 + 678344410.

It is an arithmetic number, because the mean of its divisors is an integer number (678344410).

Almost surely, 2^1356688819 is an apocalyptic number.

1356688819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356688819 is an equidigital number, since it uses as much as digits as its factorization.

1356688819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 55.

The square root of 1356688819 is about 36833.2569697549. The cubic root of 1356688819 is about 1107.0317632284.

The spelling of 1356688819 in words is "one billion, three hundred fifty-six million, six hundred eighty-eight thousand, eight hundred nineteen".