7018139 has 2 divisors, whose sum is σ = 7018140. Its totient is φ = 7018138.

The previous prime is 7018129. The next prime is 7018169. The reversal of 7018139 is 9318107.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7018139 - 2¹² = 7014043 is a prime.

It is not a weakly prime, because it can be changed into another prime (7018129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3509069 + 3509070.

It is an arithmetic number, because the mean of its divisors is an integer number (3509070).

Almost surely, 2^7018139 is an apocalyptic number.

7018139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7018139 is an equidigital number, since it uses as much as digits as its factorization.

7018139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 7018139 is about 2649.1770420264. The cubic root of 7018139 is about 191.4582074697.

Subtracting 7018139 from its reverse (9318107), we obtain a cube (2299968 = 132³).

The spelling of 7018139 in words is "seven million, eighteen thousand, one hundred thirty-nine".