854291681 has 2 divisors, whose sum is σ = 854291682. Its totient is φ = 854291680.

The previous prime is 854291611. The next prime is 854291719. The reversal of 854291681 is 186192458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622003600 + 232288081 = 24940^2 + 15241^2 .

It is a cyclic number.

It is not a de Polignac number, because 854291681 - 2²⁶ = 787182817 is a prime.

It is a super-2 number, since 2×854291681² = 1459628552451611522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (854291611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427145840 + 427145841.

It is an arithmetic number, because the mean of its divisors is an integer number (427145841).

Almost surely, 2^854291681 is an apocalyptic number.

It is an amenable number.

854291681 is a deficient number, since it is larger than the sum of its proper divisors (1).

854291681 is an equidigital number, since it uses as much as digits as its factorization.

854291681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 854291681 is about 29228.2685255217. The cubic root of 854291681 is about 948.8598254804.

The spelling of 854291681 in words is "eight hundred fifty-four million, two hundred ninety-one thousand, six hundred eighty-one".