1742738009 has 2 divisors, whose sum is σ = 1742738010. Its totient is φ = 1742738008.

The previous prime is 1742738003. The next prime is 1742738027. The reversal of 1742738009 is 9008372471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1637982784 + 104755225 = 40472^2 + 10235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1742738009 - 2⁴ = 1742737993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1742738003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 871369004 + 871369005.

It is an arithmetic number, because the mean of its divisors is an integer number (871369005).

Almost surely, 2^1742738009 is an apocalyptic number.

It is an amenable number.

1742738009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742738009 is an equidigital number, since it uses as much as digits as its factorization.

1742738009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1742738009 is about 41746.1136993613. The cubic root of 1742738009 is about 1203.4019228115.

The spelling of 1742738009 in words is "one billion, seven hundred forty-two million, seven hundred thirty-eight thousand, nine".