1740791321 has 2 divisors, whose sum is σ = 1740791322. Its totient is φ = 1740791320.

The previous prime is 1740791303. The next prime is 1740791333. The reversal of 1740791321 is 1231970471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252381321 + 488410000 = 35389^2 + 22100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1740791321 - 2¹⁰ = 1740790297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1740791021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870395660 + 870395661.

It is an arithmetic number, because the mean of its divisors is an integer number (870395661).

Almost surely, 2^1740791321 is an apocalyptic number.

It is an amenable number.

1740791321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1740791321 is an equidigital number, since it uses as much as digits as its factorization.

1740791321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1740791321 is about 41722.7913855245. The cubic root of 1740791321 is about 1202.9536777932.

The spelling of 1740791321 in words is "one billion, seven hundred forty million, seven hundred ninety-one thousand, three hundred twenty-one".