18006374929 has 2 divisors, whose sum is σ = 18006374930. Its totient is φ = 18006374928.

The previous prime is 18006374927. The next prime is 18006374951. The reversal of 18006374929 is 92947360081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10665312529 + 7341062400 = 103273^2 + 85680^2 .

It is a cyclic number.

It is not a de Polignac number, because 18006374929 - 2¹ = 18006374927 is a prime.

Together with 18006374927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18006374921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9003187464 + 9003187465.

It is an arithmetic number, because the mean of its divisors is an integer number (9003187465).

Almost surely, 2^18006374929 is an apocalyptic number.

It is an amenable number.

18006374929 is a deficient number, since it is larger than the sum of its proper divisors (1).

18006374929 is an equidigital number, since it uses as much as digits as its factorization.

18006374929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 18006374929 in words is "eighteen billion, six million, three hundred seventy-four thousand, nine hundred twenty-nine".