1744140989 has 2 divisors, whose sum is σ = 1744140990. Its totient is φ = 1744140988.

The previous prime is 1744140977. The next prime is 1744141031. The reversal of 1744140989 is 9890414471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456567225 + 287573764 = 38165^2 + 16958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1744140989 - 2²⁰ = 1743092413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1744140289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872070494 + 872070495.

It is an arithmetic number, because the mean of its divisors is an integer number (872070495).

Almost surely, 2^1744140989 is an apocalyptic number.

It is an amenable number.

1744140989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1744140989 is an equidigital number, since it uses as much as digits as its factorization.

1744140989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1744140989 is about 41762.9140386540. The cubic root of 1744140989 is about 1203.7247665127.

The spelling of 1744140989 in words is "one billion, seven hundred forty-four million, one hundred forty thousand, nine hundred eighty-nine".