804194486257 has 2 divisors, whose sum is σ = 804194486258. Its totient is φ = 804194486256.

The previous prime is 804194486143. The next prime is 804194486281. The reversal of 804194486257 is 752684491408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617362204176 + 186832282081 = 785724^2 + 432241^2 .

It is a cyclic number.

It is not a de Polignac number, because 804194486257 - 2¹⁹ = 804193961969 is a prime.

It is not a weakly prime, because it can be changed into another prime (804194486657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402097243128 + 402097243129.

It is an arithmetic number, because the mean of its divisors is an integer number (402097243129).

Almost surely, 2^804194486257 is an apocalyptic number.

It is an amenable number.

804194486257 is a deficient number, since it is larger than the sum of its proper divisors (1).

804194486257 is an equidigital number, since it uses as much as digits as its factorization.

804194486257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15482880, while the sum is 58.

It can be divided in two parts, 8041944 and 86257, that added together give a square (8128201 = 2851²).

The spelling of 804194486257 in words is "eight hundred four billion, one hundred ninety-four million, four hundred eighty-six thousand, two hundred fifty-seven".