18120607 has 2 divisors, whose sum is σ = 18120608. Its totient is φ = 18120606.

The previous prime is 18120581. The next prime is 18120637. The reversal of 18120607 is 70602181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18120607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18120637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9060303 + 9060304.

It is an arithmetic number, because the mean of its divisors is an integer number (9060304).

Almost surely, 2^18120607 is an apocalyptic number.

18120607 is a deficient number, since it is larger than the sum of its proper divisors (1).

18120607 is an equidigital number, since it uses as much as digits as its factorization.

18120607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 18120607 is about 4256.8306285310. The cubic root of 18120607 is about 262.6581698303.

Adding to 18120607 its reverse (70602181), we get a palindrome (88722788).

The spelling of 18120607 in words is "eighteen million, one hundred twenty thousand, six hundred seven".