18182810943 has 24 divisors (see below), whose sum is σ = 28658762496. Its totient is φ = 11017170000.

The previous prime is 18182810941. The next prime is 18182810953. The reversal of 18182810943 is 34901828181.

It is not a de Polignac number, because 18182810943 - 2¹ = 18182810941 is a prime.

It is a super-2 number, since 2×18182810943² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182810941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425818 + ... + 466568.

It is an arithmetic number, because the mean of its divisors is an integer number (1194115104).

Almost surely, 2^18182810943 is an apocalyptic number.

18182810943 is a deficient number, since it is larger than the sum of its proper divisors (10475951553).

18182810943 is a wasteful number, since it uses less digits than its factorization.

18182810943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45275 (or 45272 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 18182810943 in words is "eighteen billion, one hundred eighty-two million, eight hundred ten thousand, nine hundred forty-three".