7814127138 has 16 divisors (see below), whose sum is σ = 15740689440. Its totient is φ = 2585969856.

The previous prime is 7814127119. The next prime is 7814127143. The reversal of 7814127138 is 8317214187.

It is a super-3 number, since 3×7814127138³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7814127138.

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, 4683895 + ... + 4685562.

It is an arithmetic number, because the mean of its divisors is an integer number (983793090).

Almost surely, 2^7814127138 is an apocalyptic number.

7814127138 is an abundant number, since it is smaller than the sum of its proper divisors (7926562302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7814127138 is a wasteful number, since it uses less digits than its factorization.

7814127138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369601.

The product of its digits is 75264, while the sum is 42.

The square root of 7814127138 is about 88397.5516516153. The cubic root of 7814127138 is about 1984.3890611616.

The spelling of 7814127138 in words is "seven billion, eight hundred fourteen million, one hundred twenty-seven thousand, one hundred thirty-eight".