1335643069 has 2 divisors, whose sum is σ = 1335643070. Its totient is φ = 1335643068.

The previous prime is 1335643061. The next prime is 1335643123. The reversal of 1335643069 is 9603465331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1298737444 + 36905625 = 36038^2 + 6075^2 .

It is an emirp because it is prime and its reverse (9603465331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1335643069 - 2³ = 1335643061 is a prime.

It is a super-2 number, since 2×1335643069² = 3567884815535477522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1335643061) 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, 667821534 + 667821535.

It is an arithmetic number, because the mean of its divisors is an integer number (667821535).

Almost surely, 2^1335643069 is an apocalyptic number.

It is an amenable number.

1335643069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1335643069 is an equidigital number, since it uses as much as digits as its factorization.

1335643069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 40.

The square root of 1335643069 is about 36546.4508399927. The cubic root of 1335643069 is about 1101.2775979252.

The spelling of 1335643069 in words is "one billion, three hundred thirty-five million, six hundred forty-three thousand, sixty-nine".