18414435331 has 2 divisors, whose sum is σ = 18414435332. Its totient is φ = 18414435330.

The previous prime is 18414435311. The next prime is 18414435337. The reversal of 18414435331 is 13353441481.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18414435331 is a prime.

It is a super-2 number, since 2×18414435331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18414435337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9207217665 + 9207217666.

It is an arithmetic number, because the mean of its divisors is an integer number (9207217666).

Almost surely, 2^18414435331 is an apocalyptic number.

18414435331 is a deficient number, since it is larger than the sum of its proper divisors (1).

18414435331 is an equidigital number, since it uses as much as digits as its factorization.

18414435331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The spelling of 18414435331 in words is "eighteen billion, four hundred fourteen million, four hundred thirty-five thousand, three hundred thirty-one".