18453866785031 has 2 divisors, whose sum is σ = 18453866785032. Its totient is φ = 18453866785030.

The previous prime is 18453866784959. The next prime is 18453866785037. The reversal of 18453866785031 is 13058766835481.

It is a strong prime.

It is an emirp because it is prime and its reverse (13058766835481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18453866785031 - 2¹⁰ = 18453866784007 is a prime.

It is a super-2 number, since 2×18453866785031² (a number of 27 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 (18453866785037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9226933392515 + 9226933392516.

It is an arithmetic number, because the mean of its divisors is an integer number (9226933392516).

Almost surely, 2^{18453866785031} is an apocalyptic number.

18453866785031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18453866785031 is an equidigital number, since it uses as much as digits as its factorization.

18453866785031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 18453866785031 in words is "eighteen trillion, four hundred fifty-three billion, eight hundred sixty-six million, seven hundred eighty-five thousand, thirty-one".