18169007 has 8 divisors (see below), whose sum is σ = 18814080. Its totient is φ = 17527680.

The previous prime is 18169003. The next prime is 18169009. The reversal of 18169007 is 70096181.

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

It is a cyclic number.

It is not a de Polignac number, because 18169007 - 2² = 18169003 is a prime.

It is a super-2 number, since 2×18169007² = 660225630732098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18169003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11963 + ... + 13395.

It is an arithmetic number, because the mean of its divisors is an integer number (2351760).

Almost surely, 2^18169007 is an apocalyptic number.

18169007 is a deficient number, since it is larger than the sum of its proper divisors (645073).

18169007 is a wasteful number, since it uses less digits than its factorization.

18169007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 18169007 is about 4262.5118181654. The cubic root of 18169007 is about 262.8918145737.

The spelling of 18169007 in words is "eighteen million, one hundred sixty-nine thousand, seven".