3818745616 has 45 divisors (see below), whose sum is σ = 8610691719. Its totient is φ = 1635863712.

The previous prime is 3818745613. The next prime is 3818745641. The reversal of 3818745616 is 6165478183.

It is a happy number.

The square root of 3818745616 is 61796.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3818745616.

It is not an unprimeable number, because it can be changed into a prime (3818745613) 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 in 8 ways as a sum of consecutive naturals, for example, 1729185 + ... + 1731391.

Almost surely, 2^3818745616 is an apocalyptic number.

3818745616 is the 61796-th square number.

It is an amenable number.

3818745616 is an abundant number, since it is smaller than the sum of its proper divisors (4791946103).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3818745616 is an frugal number, since it uses more digits than its factorization.

3818745616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 2216 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The cubic root of 3818745616 is about 1563.0525393563.

Multiplying 3818745616 by its sum of digits (49), we get a square (187118535184 = 432572²).

3818745616 divided by its sum of digits (49) gives a square (77933584 = 8828²).

The spelling of 3818745616 in words is "three billion, eight hundred eighteen million, seven hundred forty-five thousand, six hundred sixteen".