3365838649 has 2 divisors, whose sum is σ = 3365838650. Its totient is φ = 3365838648.

The previous prime is 3365838647. The next prime is 3365838677. The reversal of 3365838649 is 9468385633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2496001600 + 869837049 = 49960^2 + 29493^2 .

It is a cyclic number.

It is not a de Polignac number, because 3365838649 - 2¹ = 3365838647 is a prime.

It is a super-2 number, since 2×3365838649² = 22657739622204290402, which contains 22 as substring.

Together with 3365838647, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3365838649.

It is not a weakly prime, because it can be changed into another prime (3365838643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1682919324 + 1682919325.

It is an arithmetic number, because the mean of its divisors is an integer number (1682919325).

Almost surely, 2^3365838649 is an apocalyptic number.

It is an amenable number.

3365838649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3365838649 is an equidigital number, since it uses as much as digits as its factorization.

3365838649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 55.

The square root of 3365838649 is about 58015.8482571788. The cubic root of 3365838649 is about 1498.6415328976.

The spelling of 3365838649 in words is "three billion, three hundred sixty-five million, eight hundred thirty-eight thousand, six hundred forty-nine".