3681615513 has 8 divisors (see below), whose sum is σ = 4918660000. Its totient is φ = 2449490688.

The previous prime is 3681615499. The next prime is 3681615527. The reversal of 3681615513 is 3155161863.

It is an interprime number because it is at equal distance from previous prime (3681615499) and next prime (3681615527).

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

It is not a de Polignac number, because 3681615513 - 2⁵ = 3681615481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681615593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228168 + ... + 1231161.

It is an arithmetic number, because the mean of its divisors is an integer number (614832500).

Almost surely, 2^3681615513 is an apocalyptic number.

It is an amenable number.

3681615513 is a deficient number, since it is larger than the sum of its proper divisors (1237044487).

3681615513 is a wasteful number, since it uses less digits than its factorization.

3681615513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459831.

The product of its digits is 64800, while the sum is 39.

The square root of 3681615513 is about 60676.3175629504. The cubic root of 3681615513 is about 1544.1144141961.

The spelling of 3681615513 in words is "three billion, six hundred eighty-one million, six hundred fifteen thousand, five hundred thirteen".