18159007 has 2 divisors, whose sum is σ = 18159008. Its totient is φ = 18159006.

The previous prime is 18158999. The next prime is 18159049. The reversal of 18159007 is 70095181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18159007 - 2³ = 18158999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18159007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18159067) 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, 9079503 + 9079504.

It is an arithmetic number, because the mean of its divisors is an integer number (9079504).

Almost surely, 2^18159007 is an apocalyptic number.

18159007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18159007 is an equidigital number, since it uses as much as digits as its factorization.

18159007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 18159007 is about 4261.3386394418. The cubic root of 18159007 is about 262.8435749056.

The spelling of 18159007 in words is "eighteen million, one hundred fifty-nine thousand, seven".