18012955327 has 2 divisors, whose sum is σ = 18012955328. Its totient is φ = 18012955326.

The previous prime is 18012955321. The next prime is 18012955357. The reversal of 18012955327 is 72355921081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18012955327 - 2²³ = 18004566719 is a prime.

It is a super-2 number, since 2×18012955327² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18012955321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006477663 + 9006477664.

It is an arithmetic number, because the mean of its divisors is an integer number (9006477664).

Almost surely, 2^18012955327 is an apocalyptic number.

18012955327 is a deficient number, since it is larger than the sum of its proper divisors (1).

18012955327 is an equidigital number, since it uses as much as digits as its factorization.

18012955327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 18012955327 in words is "eighteen billion, twelve million, nine hundred fifty-five thousand, three hundred twenty-seven".