18196414031 has 2 divisors, whose sum is σ = 18196414032. Its totient is φ = 18196414030.

The previous prime is 18196413973. The next prime is 18196414039. The reversal of 18196414031 is 13041469181.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18196414031 - 2¹⁰ = 18196413007 is a prime.

It is a super-2 number, since 2×18196414031² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18196414039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9098207015 + 9098207016.

It is an arithmetic number, because the mean of its divisors is an integer number (9098207016).

Almost surely, 2^18196414031 is an apocalyptic number.

18196414031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18196414031 is an equidigital number, since it uses as much as digits as its factorization.

18196414031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 18196414031 in words is "eighteen billion, one hundred ninety-six million, four hundred fourteen thousand, thirty-one".