18145741043831 has 2 divisors, whose sum is σ = 18145741043832. Its totient is φ = 18145741043830.

The previous prime is 18145741043827. The next prime is 18145741043879. The reversal of 18145741043831 is 13834014754181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18145741043831 - 2² = 18145741043827 is a prime.

It is a super-2 number, since 2×18145741043831² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18145741043831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18145741013831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9072870521915 + 9072870521916.

It is an arithmetic number, because the mean of its divisors is an integer number (9072870521916).

Almost surely, 2^{18145741043831} is an apocalyptic number.

18145741043831 is a deficient number, since it is larger than the sum of its proper divisors (1).

18145741043831 is an equidigital number, since it uses as much as digits as its factorization.

18145741043831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 18145741043831 in words is "eighteen trillion, one hundred forty-five billion, seven hundred forty-one million, forty-three thousand, eight hundred thirty-one".