181018007 has 2 divisors, whose sum is σ = 181018008. Its totient is φ = 181018006.

The previous prime is 181017983. The next prime is 181018039. The reversal of 181018007 is 700810181.

It is a weak prime.

It is an emirp because it is prime and its reverse (700810181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 181018007 - 2¹⁸ = 180755863 is a prime.

It is equal to p_10083707 and since 181018007 and 10083707 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181018067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90509003 + 90509004.

It is an arithmetic number, because the mean of its divisors is an integer number (90509004).

Almost surely, 2^181018007 is an apocalyptic number.

181018007 is a deficient number, since it is larger than the sum of its proper divisors (1).

181018007 is an equidigital number, since it uses as much as digits as its factorization.

181018007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 181018007 is about 13454.2932553145. The cubic root of 181018007 is about 565.6840405878.

Adding to 181018007 its reverse (700810181), we get a palindrome (881828188).

The spelling of 181018007 in words is "one hundred eighty-one million, eighteen thousand, seven".