18218594290 has 32 divisors (see below), whose sum is σ = 36455279616. Its totient is φ = 6509868480.

The previous prime is 18218594287. The next prime is 18218594297. The reversal of 18218594290 is 9249581281.

It is not an unprimeable number, because it can be changed into a prime (18218594297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2256342 + ... + 2264401.

It is an arithmetic number, because the mean of its divisors is an integer number (1139227488).

Almost surely, 2^18218594290 is an apocalyptic number.

18218594290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18218594290 is an abundant number, since it is smaller than the sum of its proper divisors (18236685326).

18218594290 is a wasteful number, since it uses less digits than its factorization.

18218594290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520794.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 18218594290 in words is "eighteen billion, two hundred eighteen million, five hundred ninety-four thousand, two hundred ninety".