18604491463 has 2 divisors, whose sum is σ = 18604491464. Its totient is φ = 18604491462.

The previous prime is 18604491427. The next prime is 18604491487. The reversal of 18604491463 is 36419440681.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18604491463 is a prime.

It is a super-2 number, since 2×18604491463² (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 (18604491163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9302245731 + 9302245732.

It is an arithmetic number, because the mean of its divisors is an integer number (9302245732).

Almost surely, 2^18604491463 is an apocalyptic number.

18604491463 is a deficient number, since it is larger than the sum of its proper divisors (1).

18604491463 is an equidigital number, since it uses as much as digits as its factorization.

18604491463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 18604491463 in words is "eighteen billion, six hundred four million, four hundred ninety-one thousand, four hundred sixty-three".