18290107 has 4 divisors (see below), whose sum is σ = 19952856. Its totient is φ = 16627360.

The previous prime is 18290101. The next prime is 18290131. The reversal of 18290107 is 70109281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70109281 = 11 ⋅6373571.

It is a cyclic number.

It is not a de Polignac number, because 18290107 - 2⁷ = 18289979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18290101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831358 + ... + 831379.

It is an arithmetic number, because the mean of its divisors is an integer number (4988214).

Almost surely, 2^18290107 is an apocalyptic number.

18290107 is a deficient number, since it is larger than the sum of its proper divisors (1662749).

18290107 is a wasteful number, since it uses less digits than its factorization.

18290107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662748.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 18290107 is about 4276.6934657513. The cubic root of 18290107 is about 263.4745968907.

Adding to 18290107 its reverse (70109281), we get a palindrome (88399388).

The spelling of 18290107 in words is "eighteen million, two hundred ninety thousand, one hundred seven".