394611193243 has 2 divisors, whose sum is σ = 394611193244. Its totient is φ = 394611193242.

The previous prime is 394611193237. The next prime is 394611193247. The reversal of 394611193243 is 342391116493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394611193243 - 2¹⁷ = 394611062171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394611193193 and 394611193202.

It is not a weakly prime, because it can be changed into another prime (394611193247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197305596621 + 197305596622.

It is an arithmetic number, because the mean of its divisors is an integer number (197305596622).

Almost surely, 2^394611193243 is an apocalyptic number.

394611193243 is a deficient number, since it is larger than the sum of its proper divisors (1).

394611193243 is an equidigital number, since it uses as much as digits as its factorization.

394611193243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The spelling of 394611193243 in words is "three hundred ninety-four billion, six hundred eleven million, one hundred ninety-three thousand, two hundred forty-three".