18309294039 has 8 divisors (see below), whose sum is σ = 24654099312. Its totient is φ = 12085342400.

The previous prime is 18309293953. The next prime is 18309294071. The reversal of 18309294039 is 93049290381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18309294039 - 2¹¹ = 18309291991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18309294089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30213054 + ... + 30213659.

It is an arithmetic number, because the mean of its divisors is an integer number (3081762414).

Almost surely, 2^18309294039 is an apocalyptic number.

18309294039 is a deficient number, since it is larger than the sum of its proper divisors (6344805273).

18309294039 is a wasteful number, since it uses less digits than its factorization.

18309294039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60426817.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 18309294039 in words is "eighteen billion, three hundred nine million, two hundred ninety-four thousand, thirty-nine".