18623107 has 2 divisors, whose sum is σ = 18623108. Its totient is φ = 18623106.

The previous prime is 18623093. The next prime is 18623131. The reversal of 18623107 is 70132681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18623107 - 2¹⁹ = 18098819 is a prime.

It is a super-2 number, since 2×18623107² = 693640228666898, which contains 22 as substring.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (18623167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9311553 + 9311554.

It is an arithmetic number, because the mean of its divisors is an integer number (9311554).

Almost surely, 2^18623107 is an apocalyptic number.

18623107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18623107 is an equidigital number, since it uses as much as digits as its factorization.

18623107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 18623107 is about 4315.4498027436. The cubic root of 18623107 is about 265.0639788564.

Adding to 18623107 its reverse (70132681), we get a palindrome (88755788).

The spelling of 18623107 in words is "eighteen million, six hundred twenty-three thousand, one hundred seven".