8138015534 has 32 divisors (see below), whose sum is σ = 13401303552. Its totient is φ = 3675672000.

The previous prime is 8138015531. The next prime is 8138015621. The reversal of 8138015534 is 4355108318.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138015531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4348619 + ... + 4350489.

It is an arithmetic number, because the mean of its divisors is an integer number (418790736).

Almost surely, 2^8138015534 is an apocalyptic number.

8138015534 is a deficient number, since it is larger than the sum of its proper divisors (5263288018).

8138015534 is a wasteful number, since it uses less digits than its factorization.

8138015534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 8138015534 is about 90210.9501889876. The cubic root of 8138015534 is about 2011.4357813246.

The spelling of 8138015534 in words is "eight billion, one hundred thirty-eight million, fifteen thousand, five hundred thirty-four".