18232937 has 2 divisors, whose sum is σ = 18232938. Its totient is φ = 18232936.

The previous prime is 18232931. The next prime is 18232939. The reversal of 18232937 is 73923281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 4177936 = 3749^2 + 2044^2 .

It is a cyclic number.

It is not a de Polignac number, because 18232937 - 2⁶ = 18232873 is a prime.

Together with 18232939, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18232897 and 18232906.

It is not a weakly prime, because it can be changed into another prime (18232931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116468 + 9116469.

It is an arithmetic number, because the mean of its divisors is an integer number (9116469).

Almost surely, 2^18232937 is an apocalyptic number.

It is an amenable number.

18232937 is a deficient number, since it is larger than the sum of its proper divisors (1).

18232937 is an equidigital number, since it uses as much as digits as its factorization.

18232937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 18232937 is about 4270.0043325505. The cubic root of 18232937 is about 263.1997932467.

The spelling of 18232937 in words is "eighteen million, two hundred thirty-two thousand, nine hundred thirty-seven".