18245137 has 2 divisors, whose sum is σ = 18245138. Its totient is φ = 18245136.

The previous prime is 18245077. The next prime is 18245153. The reversal of 18245137 is 73154281.

18245137 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16329681 + 1915456 = 4041^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 18245137 - 2⁷ = 18245009 is a prime.

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18245099 and 18245108.

It is not a weakly prime, because it can be changed into another prime (18245167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122568 + 9122569.

It is an arithmetic number, because the mean of its divisors is an integer number (9122569).

Almost surely, 2^18245137 is an apocalyptic number.

It is an amenable number.

18245137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18245137 is an equidigital number, since it uses as much as digits as its factorization.

18245137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 18245137 is about 4271.4326636387. The cubic root of 18245137 is about 263.2584841304.

The spelling of 18245137 in words is "eighteen million, two hundred forty-five thousand, one hundred thirty-seven".