18132305349 has 24 divisors (see below), whose sum is σ = 25792715520. Its totient is φ = 11328177664.

The previous prime is 18132305339. The next prime is 18132305353. The reversal of 18132305349 is 94350323181.

It is a happy number.

It is not a de Polignac number, because 18132305349 - 2⁹ = 18132304837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18132305329) 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, 157132 + ... + 246890.

It is an arithmetic number, because the mean of its divisors is an integer number (1074696480).

Almost surely, 2^18132305349 is an apocalyptic number.

It is an amenable number.

18132305349 is a deficient number, since it is larger than the sum of its proper divisors (7660410171).

18132305349 is a wasteful number, since it uses less digits than its factorization.

18132305349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90029 (or 90012 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 18132305349 in words is "eighteen billion, one hundred thirty-two million, three hundred five thousand, three hundred forty-nine".