3685201969 has 2 divisors, whose sum is σ = 3685201970. Its totient is φ = 3685201968.

The previous prime is 3685201921. The next prime is 3685202021. The reversal of 3685201969 is 9691025863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2429208369 + 1255993600 = 49287^2 + 35440^2 .

It is an emirp because it is prime and its reverse (9691025863) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685201969 is a prime.

It is a super-2 number, since 2×3685201969² = 27161427104642953922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3685201669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842600984 + 1842600985.

It is an arithmetic number, because the mean of its divisors is an integer number (1842600985).

Almost surely, 2^3685201969 is an apocalyptic number.

It is an amenable number.

3685201969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3685201969 is an equidigital number, since it uses as much as digits as its factorization.

3685201969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 3685201969 is about 60705.8643707509. The cubic root of 3685201969 is about 1544.6156525886.

The spelling of 3685201969 in words is "three billion, six hundred eighty-five million, two hundred one thousand, nine hundred sixty-nine".