1493565839 has 2 divisors, whose sum is σ = 1493565840. Its totient is φ = 1493565838.

The previous prime is 1493565793. The next prime is 1493565841. The reversal of 1493565839 is 9385653941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1493565839 - 2¹² = 1493561743 is a prime.

Together with 1493565841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1493565539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746782919 + 746782920.

It is an arithmetic number, because the mean of its divisors is an integer number (746782920).

Almost surely, 2^1493565839 is an apocalyptic number.

1493565839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493565839 is an equidigital number, since it uses as much as digits as its factorization.

1493565839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 53.

The square root of 1493565839 is about 38646.6795339522. The cubic root of 1493565839 is about 1143.0751688035.

The spelling of 1493565839 in words is "one billion, four hundred ninety-three million, five hundred sixty-five thousand, eight hundred thirty-nine".