394556802037 has 2 divisors, whose sum is σ = 394556802038. Its totient is φ = 394556802036.

The previous prime is 394556802001. The next prime is 394556802077. The reversal of 394556802037 is 730208655493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277424477521 + 117132324516 = 526711^2 + 342246^2 .

It is a cyclic number.

It is not a de Polignac number, because 394556802037 - 2¹⁹ = 394556277749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394556802077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197278401018 + 197278401019.

It is an arithmetic number, because the mean of its divisors is an integer number (197278401019).

Almost surely, 2^394556802037 is an apocalyptic number.

It is an amenable number.

394556802037 is a deficient number, since it is larger than the sum of its proper divisors (1).

394556802037 is an equidigital number, since it uses as much as digits as its factorization.

394556802037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 394556802037 in words is "three hundred ninety-four billion, five hundred fifty-six million, eight hundred two thousand, thirty-seven".