3744485621 has 2 divisors, whose sum is σ = 3744485622. Its totient is φ = 3744485620.

The previous prime is 3744485609. The next prime is 3744485627. The reversal of 3744485621 is 1265844473.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2119589521 + 1624896100 = 46039^2 + 40310^2 .

It is a cyclic number.

It is not a de Polignac number, because 3744485621 - 2⁶ = 3744485557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3744485627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1872242810 + 1872242811.

It is an arithmetic number, because the mean of its divisors is an integer number (1872242811).

Almost surely, 2^3744485621 is an apocalyptic number.

It is an amenable number.

3744485621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3744485621 is an equidigital number, since it uses as much as digits as its factorization.

3744485621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 44.

The square root of 3744485621 is about 61192.2022891806. The cubic root of 3744485621 is about 1552.8543479417.

The spelling of 3744485621 in words is "three billion, seven hundred forty-four million, four hundred eighty-five thousand, six hundred twenty-one".