18397434151 has 2 divisors, whose sum is σ = 18397434152. Its totient is φ = 18397434150.

The previous prime is 18397434131. The next prime is 18397434163. The reversal of 18397434151 is 15143479381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18397434151 - 2¹⁹ = 18396909863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18397434101) 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, 9198717075 + 9198717076.

It is an arithmetic number, because the mean of its divisors is an integer number (9198717076).

Almost surely, 2^18397434151 is an apocalyptic number.

18397434151 is a deficient number, since it is larger than the sum of its proper divisors (1).

18397434151 is an equidigital number, since it uses as much as digits as its factorization.

18397434151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The spelling of 18397434151 in words is "eighteen billion, three hundred ninety-seven million, four hundred thirty-four thousand, one hundred fifty-one".