1493597489 has 2 divisors, whose sum is σ = 1493597490. Its totient is φ = 1493597488.

The previous prime is 1493597473. The next prime is 1493597491. The reversal of 1493597489 is 9847953941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1230606400 + 262991089 = 35080^2 + 16217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493597489 - 2⁴ = 1493597473 is a prime.

Together with 1493597491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1493597419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746798744 + 746798745.

It is an arithmetic number, because the mean of its divisors is an integer number (746798745).

Almost surely, 2^1493597489 is an apocalyptic number.

It is an amenable number.

1493597489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493597489 is an equidigital number, since it uses as much as digits as its factorization.

1493597489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 59.

The square root of 1493597489 is about 38647.0890106875. The cubic root of 1493597489 is about 1143.0832430092.

The spelling of 1493597489 in words is "one billion, four hundred ninety-three million, five hundred ninety-seven thousand, four hundred eighty-nine".