18372107 has 8 divisors (see below), whose sum is σ = 20826960. Its totient is φ = 16066080.

The previous prime is 18372103. The next prime is 18372157. The reversal of 18372107 is 70127381.

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 18372107 - 2² = 18372103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18372107.

It is not an unprimeable number, because it can be changed into a prime (18372103) 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, 36944 + ... + 37437.

It is an arithmetic number, because the mean of its divisors is an integer number (2603370).

Almost surely, 2^18372107 is an apocalyptic number.

18372107 is a deficient number, since it is larger than the sum of its proper divisors (2454853).

18372107 is a wasteful number, since it uses less digits than its factorization.

18372107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74413.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 18372107 is about 4286.2695902148. The cubic root of 18372107 is about 263.8677549703.

Adding to 18372107 its reverse (70127381), we get a palindrome (88499488).

The spelling of 18372107 in words is "eighteen million, three hundred seventy-two thousand, one hundred seven".