1493358791 has 2 divisors, whose sum is σ = 1493358792. Its totient is φ = 1493358790.

The previous prime is 1493358731. The next prime is 1493358803. The reversal of 1493358791 is 1978533941.

It is a strong prime.

It is an emirp because it is prime and its reverse (1978533941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1493358791 - 2²⁶ = 1426249927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1493358701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746679395 + 746679396.

It is an arithmetic number, because the mean of its divisors is an integer number (746679396).

Almost surely, 2^1493358791 is an apocalyptic number.

1493358791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493358791 is an equidigital number, since it uses as much as digits as its factorization.

1493358791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 1493358791 is about 38644.0007116240. Note that the first 3 decimals coincide. The cubic root of 1493358791 is about 1143.0223461428.

The spelling of 1493358791 in words is "one billion, four hundred ninety-three million, three hundred fifty-eight thousand, seven hundred ninety-one".