18908688322 has 8 divisors (see below), whose sum is σ = 28365558336. Its totient is φ = 9453502212.

The previous prime is 18908688287. The next prime is 18908688341. The reversal of 18908688322 is 22388680981.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392518 + ... + 438049.

It is an arithmetic number, because the mean of its divisors is an integer number (3545694792).

Almost surely, 2^18908688322 is an apocalyptic number.

18908688322 is a deficient number, since it is larger than the sum of its proper divisors (9456870014).

18908688322 is a wasteful number, since it uses less digits than its factorization.

18908688322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841952.

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 18908688322 in words is "eighteen billion, nine hundred eight million, six hundred eighty-eight thousand, three hundred twenty-two".