18333339445 has 32 divisors (see below), whose sum is σ = 23480658432. Its totient is φ = 13710757632.

The previous prime is 18333339439. The next prime is 18333339449. The reversal of 18333339445 is 54493333381.

It is a cyclic number.

It is not a de Polignac number, because 18333339445 - 2⁷ = 18333339317 is a prime.

It is a super-2 number, since 2×18333339445² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18333339395 and 18333339404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18333339449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1597267 + ... + 1608703.

It is an arithmetic number, because the mean of its divisors is an integer number (733770576).

Almost surely, 2^18333339445 is an apocalyptic number.

It is an amenable number.

18333339445 is a deficient number, since it is larger than the sum of its proper divisors (5147318987).

18333339445 is a wasteful number, since it uses less digits than its factorization.

18333339445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11781.

The product of its digits is 1399680, while the sum is 46.

It can be divided in two parts, 183333 and 39445, that added together give a triangular number (222778 = T₆₆₇).

The spelling of 18333339445 in words is "eighteen billion, three hundred thirty-three million, three hundred thirty-nine thousand, four hundred forty-five".