18490922 has 8 divisors (see below), whose sum is σ = 28692900. Its totient is φ = 8926624.

The previous prime is 18490921. The next prime is 18490931. The reversal of 18490922 is 22909481.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 436921 = 4249^2 + 661^2 .

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

It is a super-5 number, since 5×18490922⁵ (a number of 38 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (18490921) 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, 159347 + ... + 159462.

Almost surely, 2^18490922 is an apocalyptic number.

18490922 is a deficient number, since it is larger than the sum of its proper divisors (10201978).

18490922 is a wasteful number, since it uses less digits than its factorization.

18490922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318840.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18490922 is about 4300.1072079659. The cubic root of 18490922 is about 264.4353564317.

The spelling of 18490922 in words is "eighteen million, four hundred ninety thousand, nine hundred twenty-two".