493178939243 has 2 divisors, whose sum is σ = 493178939244. Its totient is φ = 493178939242.

The previous prime is 493178939207. The next prime is 493178939249. The reversal of 493178939243 is 342939871394.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 493178939243 - 2²² = 493174744939 is a prime.

It is a super-2 number, since 2×493178939243² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (493178939249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246589469621 + 246589469622.

It is an arithmetic number, because the mean of its divisors is an integer number (246589469622).

Almost surely, 2^493178939243 is an apocalyptic number.

493178939243 is a deficient number, since it is larger than the sum of its proper divisors (1).

493178939243 is an equidigital number, since it uses as much as digits as its factorization.

493178939243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 62.

The spelling of 493178939243 in words is "four hundred ninety-three billion, one hundred seventy-eight million, nine hundred thirty-nine thousand, two hundred forty-three".