18011007 has 48 divisors (see below), whose sum is σ = 32078592. Its totient is φ = 9504000.

The previous prime is 18010999. The next prime is 18011009. The reversal of 18011007 is 70011081.

It is not a de Polignac number, because 18011007 - 2³ = 18010999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18011009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71632 + ... + 71882.

It is an arithmetic number, because the mean of its divisors is an integer number (668304).

Almost surely, 2^18011007 is an apocalyptic number.

18011007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18011007 is a deficient number, since it is larger than the sum of its proper divisors (14067585).

18011007 is a wasteful number, since it uses less digits than its factorization.

18011007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 18011007 is about 4243.9376762625. The cubic root of 18011007 is about 262.1275479813.

Adding to 18011007 its reverse (70011081), we get a palindrome (88022088).

The spelling of 18011007 in words is "eighteen million, eleven thousand, seven".