138018627 has 32 divisors (see below), whose sum is σ = 212544000. Its totient is φ = 88411680.

The previous prime is 138018623. The next prime is 138018637. The reversal of 138018627 is 726810831.

138018627 is a `hidden beast` number, since 13 + 8 + 0 + 18 + 627 = 666.

It is not a de Polignac number, because 138018627 - 2² = 138018623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138018591 and 138018600.

It is not an unprimeable number, because it can be changed into a prime (138018623) 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, 280852 + ... + 281342.

It is an arithmetic number, because the mean of its divisors is an integer number (6642000).

Almost surely, 2^138018627 is an apocalyptic number.

138018627 is a deficient number, since it is larger than the sum of its proper divisors (74525373).

138018627 is a wasteful number, since it uses less digits than its factorization.

138018627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 138018627 is about 11748.1329154892. The cubic root of 138018627 is about 516.7881748673.

The spelling of 138018627 in words is "one hundred thirty-eight million, eighteen thousand, six hundred twenty-seven".