18218196902 has 8 divisors (see below), whose sum is σ = 27329850912. Its totient is φ = 9108246600.

The previous prime is 18218196883. The next prime is 18218196907. The reversal of 18218196902 is 20969181281.

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 (18218196907) 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, 398849 + ... + 442172.

It is an arithmetic number, because the mean of its divisors is an integer number (3416231364).

Almost surely, 2^18218196902 is an apocalyptic number.

18218196902 is a deficient number, since it is larger than the sum of its proper divisors (9111654010).

18218196902 is a wasteful number, since it uses less digits than its factorization.

18218196902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851854.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 18218196902 in words is "eighteen billion, two hundred eighteen million, one hundred ninety-six thousand, nine hundred two".