18101011943 has 12 divisors (see below), whose sum is σ = 21625369992. Its totient is φ = 15095823120.

The previous prime is 18101011933. The next prime is 18101011949. The reversal of 18101011943 is 34911010181.

It is not a de Polignac number, because 18101011943 - 2¹⁰ = 18101010919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18101011949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4990193 + ... + 4993818.

It is an arithmetic number, because the mean of its divisors is an integer number (1802114166).

Almost surely, 2^18101011943 is an apocalyptic number.

18101011943 is a deficient number, since it is larger than the sum of its proper divisors (3524358049).

18101011943 is an equidigital number, since it uses as much as digits as its factorization.

18101011943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9984062 (or 9984055 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 18101011943 in words is "eighteen billion, one hundred one million, eleven thousand, nine hundred forty-three".