394611051437 has 2 divisors, whose sum is σ = 394611051438. Its totient is φ = 394611051436.

The previous prime is 394611051403. The next prime is 394611051463. The reversal of 394611051437 is 734150116493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362850821641 + 31760229796 = 602371^2 + 178214^2 .

It is an emirp because it is prime and its reverse (734150116493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394611051437 - 2²² = 394606857133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394611041437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197305525718 + 197305525719.

It is an arithmetic number, because the mean of its divisors is an integer number (197305525719).

Almost surely, 2^394611051437 is an apocalyptic number.

It is an amenable number.

394611051437 is a deficient number, since it is larger than the sum of its proper divisors (1).

394611051437 is an equidigital number, since it uses as much as digits as its factorization.

394611051437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 394611051437 in words is "three hundred ninety-four billion, six hundred eleven million, fifty-one thousand, four hundred thirty-seven".