3981653615 has 8 divisors (see below), whose sum is σ = 4792421328. Its totient is φ = 3175698240.

The previous prime is 3981653597. The next prime is 3981653633. The reversal of 3981653615 is 5163561893.

It is an interprime number because it is at equal distance from previous prime (3981653597) and next prime (3981653633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3981653615 - 2⁸ = 3981653359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3981653615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201262 + ... + 1204571.

It is an arithmetic number, because the mean of its divisors is an integer number (599052666).

Almost surely, 2^3981653615 is an apocalyptic number.

3981653615 is a deficient number, since it is larger than the sum of its proper divisors (810767713).

3981653615 is a wasteful number, since it uses less digits than its factorization.

3981653615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406169.

The product of its digits is 583200, while the sum is 47.

The square root of 3981653615 is about 63100.3456012723. The cubic root of 3981653615 is about 1584.9704094759.

The spelling of 3981653615 in words is "three billion, nine hundred eighty-one million, six hundred fifty-three thousand, six hundred fifteen".