394788358351 has 2 divisors, whose sum is σ = 394788358352. Its totient is φ = 394788358350.

The previous prime is 394788358277. The next prime is 394788358357. The reversal of 394788358351 is 153853887493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394788358351 - 2¹⁷ = 394788227279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394788358357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197394179175 + 197394179176.

It is an arithmetic number, because the mean of its divisors is an integer number (197394179176).

Almost surely, 2^394788358351 is an apocalyptic number.

394788358351 is a deficient number, since it is larger than the sum of its proper divisors (1).

394788358351 is an equidigital number, since it uses as much as digits as its factorization.

394788358351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 64.

The spelling of 394788358351 in words is "three hundred ninety-four billion, seven hundred eighty-eight million, three hundred fifty-eight thousand, three hundred fifty-one".