3728855738415 has 16 divisors (see below), whose sum is σ = 5966279421408. Its totient is φ = 1988686313856.

The previous prime is 3728855738393. The next prime is 3728855738507. The reversal of 3728855738415 is 5148375588273.

It is a happy number.

It is not a de Polignac number, because 3728855738415 - 2¹⁵ = 3728855705647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1447684 + ... + 3090873.

It is an arithmetic number, because the mean of its divisors is an integer number (372892463838).

Almost surely, 2^{3728855738415} is an apocalyptic number.

3728855738415 is a deficient number, since it is larger than the sum of its proper divisors (2237423682993).

3728855738415 is a wasteful number, since it uses less digits than its factorization.

3728855738415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593338.

The product of its digits is 225792000, while the sum is 66.

The spelling of 3728855738415 in words is "three trillion, seven hundred twenty-eight billion, eight hundred fifty-five million, seven hundred thirty-eight thousand, four hundred fifteen".