918006139 has 2 divisors, whose sum is σ = 918006140. Its totient is φ = 918006138.

The previous prime is 918006127. The next prime is 918006191. The reversal of 918006139 is 931600819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 918006139 - 2¹¹ = 918004091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 918006098 and 918006107.

It is not a weakly prime, because it can be changed into another prime (918006839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459003069 + 459003070.

It is an arithmetic number, because the mean of its divisors is an integer number (459003070).

Almost surely, 2^918006139 is an apocalyptic number.

918006139 is a deficient number, since it is larger than the sum of its proper divisors (1).

918006139 is an equidigital number, since it uses as much as digits as its factorization.

918006139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 918006139 is about 30298.6161235130. The cubic root of 918006139 is about 971.8857068247.

The spelling of 918006139 in words is "nine hundred eighteen million, six thousand, one hundred thirty-nine".