18485907 has 8 divisors (see below), whose sum is σ = 26888640. Its totient is φ = 11203560.

The previous prime is 18485891. The next prime is 18485959. The reversal of 18485907 is 70958481.

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

It is not a de Polignac number, because 18485907 - 2⁴ = 18485891 is a prime.

It is a super-2 number, since 2×18485907² = 683457515225298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18485107) 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, 280057 + ... + 280122.

It is an arithmetic number, because the mean of its divisors is an integer number (3361080).

Almost surely, 2^18485907 is an apocalyptic number.

18485907 is a deficient number, since it is larger than the sum of its proper divisors (8402733).

18485907 is a wasteful number, since it uses less digits than its factorization.

18485907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560193.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 18485907 is about 4299.5240434262. The cubic root of 18485907 is about 264.4114480652.

The spelling of 18485907 in words is "eighteen million, four hundred eighty-five thousand, nine hundred seven".