3754505644649 has 2 divisors, whose sum is σ = 3754505644650. Its totient is φ = 3754505644648.

The previous prime is 3754505644577. The next prime is 3754505644651. The reversal of 3754505644649 is 9464465054573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3752910441049 + 1595203600 = 1937243^2 + 39940^2 .

It is a cyclic number.

It is not a de Polignac number, because 3754505644649 - 2¹⁶ = 3754505579113 is a prime.

Together with 3754505644651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3754505644591 and 3754505644600.

It is not a weakly prime, because it can be changed into another prime (3754505644249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1877252822324 + 1877252822325.

It is an arithmetic number, because the mean of its divisors is an integer number (1877252822325).

Almost surely, 2^{3754505644649} is an apocalyptic number.

It is an amenable number.

3754505644649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3754505644649 is an equidigital number, since it uses as much as digits as its factorization.

3754505644649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728000, while the sum is 62.

The spelling of 3754505644649 in words is "three trillion, seven hundred fifty-four billion, five hundred five million, six hundred forty-four thousand, six hundred forty-nine".