18373441 has 2 divisors, whose sum is σ = 18373442. Its totient is φ = 18373440.

The previous prime is 18373417. The next prime is 18373463. The reversal of 18373441 is 14437381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15800625 + 2572816 = 3975^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 18373441 - 2²¹ = 16276289 is a prime.

It is not a weakly prime, because it can be changed into another prime (18374441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9186720 + 9186721.

It is an arithmetic number, because the mean of its divisors is an integer number (9186721).

Almost surely, 2^18373441 is an apocalyptic number.

It is an amenable number.

18373441 is a deficient number, since it is larger than the sum of its proper divisors (1).

18373441 is an equidigital number, since it uses as much as digits as its factorization.

18373441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 18373441 is about 4286.4252005605. The cubic root of 18373441 is about 263.8741413012.

The spelling of 18373441 in words is "eighteen million, three hundred seventy-three thousand, four hundred forty-one".