18161106 has 8 divisors (see below), whose sum is σ = 36322224. Its totient is φ = 6053700.

The previous prime is 18161089. The next prime is 18161111. The reversal of 18161106 is 60116181.

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

18161106 is an admirable number.

It is a super-2 number, since 2×18161106² = 659651542286472, which contains 22 as substring.

It is a Curzon number.

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, 1513420 + ... + 1513431.

It is an arithmetic number, because the mean of its divisors is an integer number (4540278).

Almost surely, 2^18161106 is an apocalyptic number.

18161106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18161106 is a wasteful number, since it uses less digits than its factorization.

18161106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026856.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 18161106 is about 4261.5849164366. The cubic root of 18161106 is about 262.8537018802.

Adding to 18161106 its reverse (60116181), we get a palindrome (78277287).

The spelling of 18161106 in words is "eighteen million, one hundred sixty-one thousand, one hundred six".