8026540138 has 16 divisors (see below), whose sum is σ = 12568602816. Its totient is φ = 3837153760.

The previous prime is 8026540121. The next prime is 8026540141. The reversal of 8026540138 is 8310456208.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8026540097 and 8026540106.

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, 76545 + ... + 148027.

It is an arithmetic number, because the mean of its divisors is an integer number (785537676).

Almost surely, 2^8026540138 is an apocalyptic number.

8026540138 is a deficient number, since it is larger than the sum of its proper divisors (4542062678).

8026540138 is a wasteful number, since it uses less digits than its factorization.

8026540138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73949.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 8026540138 is about 89590.9601354958. The cubic root of 8026540138 is about 2002.2092369043.

The spelling of 8026540138 in words is "eight billion, twenty-six million, five hundred forty thousand, one hundred thirty-eight".