18043978702 has 8 divisors (see below), whose sum is σ = 27100361736. Its totient is φ = 9010524792.

The previous prime is 18043978621. The next prime is 18043978709. The reversal of 18043978702 is 20787934081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18043978709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5730313 + ... + 5733460.

It is an arithmetic number, because the mean of its divisors is an integer number (3387545217).

Almost surely, 2^18043978702 is an apocalyptic number.

18043978702 is a deficient number, since it is larger than the sum of its proper divisors (9056383034).

18043978702 is a wasteful number, since it uses less digits than its factorization.

18043978702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11464562.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 18043978702 in words is "eighteen billion, forty-three million, nine hundred seventy-eight thousand, seven hundred two".