1718770049 has 2 divisors, whose sum is σ = 1718770050. Its totient is φ = 1718770048.

The previous prime is 1718770043. The next prime is 1718770073. The reversal of 1718770049 is 9400778171.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1532174449 + 186595600 = 39143^2 + 13660^2 .

It is an emirp because it is prime and its reverse (9400778171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1718770049 - 2²⁸ = 1450334593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1718769991 and 1718770009.

It is not a weakly prime, because it can be changed into another prime (1718770043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859385024 + 859385025.

It is an arithmetic number, because the mean of its divisors is an integer number (859385025).

Almost surely, 2^1718770049 is an apocalyptic number.

It is an amenable number.

1718770049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1718770049 is an equidigital number, since it uses as much as digits as its factorization.

1718770049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 44.

The square root of 1718770049 is about 41458.0516787753. The cubic root of 1718770049 is about 1197.8596218562.

The spelling of 1718770049 in words is "one billion, seven hundred eighteen million, seven hundred seventy thousand, forty-nine".