18349922 has 8 divisors (see below), whose sum is σ = 27564636. Its totient is φ = 9161712.

The previous prime is 18349901. The next prime is 18349927. The reversal of 18349922 is 22994381.

It can be written as a sum of positive squares in 2 ways, for example, as 12737761 + 5612161 = 3569^2 + 2369^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18349927) 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, 4793 + ... + 7724.

Almost surely, 2^18349922 is an apocalyptic number.

18349922 is a deficient number, since it is larger than the sum of its proper divisors (9214714).

18349922 is a wasteful number, since it uses less digits than its factorization.

18349922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13252.

The product of its digits is 31104, while the sum is 38.

The square root of 18349922 is about 4283.6808938108. The cubic root of 18349922 is about 263.7615021600.

It can be divided in two parts, 183 and 49922, that added together give a palindrome (50105).

The spelling of 18349922 in words is "eighteen million, three hundred forty-nine thousand, nine hundred twenty-two".