18607104991 has 2 divisors, whose sum is σ = 18607104992. Its totient is φ = 18607104990.

The previous prime is 18607104941. The next prime is 18607105003. The reversal of 18607104991 is 19940170681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18607104991 - 2¹⁵ = 18607072223 is a prime.

It is a super-2 number, since 2×18607104991² (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 (18607104931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9303552495 + 9303552496.

It is an arithmetic number, because the mean of its divisors is an integer number (9303552496).

Almost surely, 2^18607104991 is an apocalyptic number.

18607104991 is a deficient number, since it is larger than the sum of its proper divisors (1).

18607104991 is an equidigital number, since it uses as much as digits as its factorization.

18607104991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 18607104991 in words is "eighteen billion, six hundred seven million, one hundred four thousand, nine hundred ninety-one".