18195137 has 2 divisors, whose sum is σ = 18195138. Its totient is φ = 18195136.

The previous prime is 18195131. The next prime is 18195143. The reversal of 18195137 is 73159181.

It is a balanced prime because it is at equal distance from previous prime (18195131) and next prime (18195143).

It can be written as a sum of positive squares in only one way, i.e., 14776336 + 3418801 = 3844^2 + 1849^2 .

It is a cyclic number.

It is not a de Polignac number, because 18195137 - 2⁸ = 18194881 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18195097 and 18195106.

It is not a weakly prime, because it can be changed into another prime (18195131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9097568 + 9097569.

It is an arithmetic number, because the mean of its divisors is an integer number (9097569).

Almost surely, 2^18195137 is an apocalyptic number.

It is an amenable number.

18195137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18195137 is an equidigital number, since it uses as much as digits as its factorization.

18195137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 35.

The square root of 18195137 is about 4265.5758110717. The cubic root of 18195137 is about 263.0177813304.

The spelling of 18195137 in words is "eighteen million, one hundred ninety-five thousand, one hundred thirty-seven".