18233018632 has 8 divisors (see below), whose sum is σ = 34186909950. Its totient is φ = 9116509312.

The previous prime is 18233018623. The next prime is 18233018633. The reversal of 18233018632 is 23681033281.

It can be written as a sum of positive squares in only one way, i.e., 12899053476 + 5333965156 = 113574^2 + 73034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18233018591 and 18233018600.

It is not an unprimeable number, because it can be changed into a prime (18233018633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139563657 + ... + 1139563672.

Almost surely, 2^18233018632 is an apocalyptic number.

It is an amenable number.

18233018632 is a deficient number, since it is larger than the sum of its proper divisors (15953891318).

18233018632 is a wasteful number, since it uses less digits than its factorization.

18233018632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279127335 (or 2279127331 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 18233018632 in words is "eighteen billion, two hundred thirty-three million, eighteen thousand, six hundred thirty-two".