1718832749 has 2 divisors, whose sum is σ = 1718832750. Its totient is φ = 1718832748.

The previous prime is 1718832733. The next prime is 1718832763. The reversal of 1718832749 is 9472388171.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1520220100 + 198612649 = 38990^2 + 14093^2 .

It is a cyclic number.

It is not a de Polignac number, because 1718832749 - 2⁴ = 1718832733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1718832697 and 1718832706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1718832769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859416374 + 859416375.

It is an arithmetic number, because the mean of its divisors is an integer number (859416375).

Almost surely, 2^1718832749 is an apocalyptic number.

It is an amenable number.

1718832749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1718832749 is an equidigital number, since it uses as much as digits as its factorization.

1718832749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 50.

The square root of 1718832749 is about 41458.8078579209. The cubic root of 1718832749 is about 1197.8741874821.

The spelling of 1718832749 in words is "one billion, seven hundred eighteen million, eight hundred thirty-two thousand, seven hundred forty-nine".