4138982615 has 32 divisors (see below), whose sum is σ = 5198618880. Its totient is φ = 3160594944.

The previous prime is 4138982611. The next prime is 4138982623. The reversal of 4138982615 is 5162898314.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4138982615 - 2² = 4138982611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4138982615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138982611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2527577 + ... + 2529213.

It is an arithmetic number, because the mean of its divisors is an integer number (162456840).

Almost surely, 2^4138982615 is an apocalyptic number.

4138982615 is a deficient number, since it is larger than the sum of its proper divisors (1059636265).

4138982615 is a wasteful number, since it uses less digits than its factorization.

4138982615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931.

The product of its digits is 414720, while the sum is 47.

The square root of 4138982615 is about 64334.9253127724. The cubic root of 4138982615 is about 1605.5772311306.

The spelling of 4138982615 in words is "four billion, one hundred thirty-eight million, nine hundred eighty-two thousand, six hundred fifteen".