3744727645 has 4 divisors (see below), whose sum is σ = 4493673180. Its totient is φ = 2995782112.

The previous prime is 3744727639. The next prime is 3744727663. The reversal of 3744727645 is 5467274473.

3744727645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5467274473 = 62627 ⋅87299.

It can be written as a sum of positive squares in 2 ways, for example, as 508141764 + 3236585881 = 22542^2 + 56891^2 .

It is a cyclic number.

It is not a de Polignac number, because 3744727645 - 2²⁹ = 3207856733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374472760 + ... + 374472769.

It is an arithmetic number, because the mean of its divisors is an integer number (1123418295).

Almost surely, 2^3744727645 is an apocalyptic number.

It is an amenable number.

3744727645 is a deficient number, since it is larger than the sum of its proper divisors (748945535).

3744727645 is an equidigital number, since it uses as much as digits as its factorization.

3744727645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748945534.

The product of its digits is 3951360, while the sum is 49.

The square root of 3744727645 is about 61194.1798294576. The cubic root of 3744727645 is about 1552.8878033533.

The spelling of 3744727645 in words is "three billion, seven hundred forty-four million, seven hundred twenty-seven thousand, six hundred forty-five".