3385685729 has 2 divisors, whose sum is σ = 3385685730. Its totient is φ = 3385685728.

The previous prime is 3385685717. The next prime is 3385685747. The reversal of 3385685729 is 9275865833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2410810000 + 974875729 = 49100^2 + 31223^2 .

It is a cyclic number.

It is not a de Polignac number, because 3385685729 - 2²⁸ = 3117250273 is a prime.

It is a super-2 number, since 2×3385685729² = 22925735711108522882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3385685029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1692842864 + 1692842865.

It is an arithmetic number, because the mean of its divisors is an integer number (1692842865).

Almost surely, 2^3385685729 is an apocalyptic number.

It is an amenable number.

3385685729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3385685729 is an equidigital number, since it uses as much as digits as its factorization.

3385685729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 56.

The square root of 3385685729 is about 58186.6456242324. The cubic root of 3385685729 is about 1501.5814031531.

The spelling of 3385685729 in words is "three billion, three hundred eighty-five million, six hundred eighty-five thousand, seven hundred twenty-nine".