801842957 has 2 divisors, whose sum is σ = 801842958. Its totient is φ = 801842956.

The previous prime is 801842933. The next prime is 801842971. The reversal of 801842957 is 759248108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431434441 + 370408516 = 20771^2 + 19246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801842957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801842917) 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, 400921478 + 400921479.

It is an arithmetic number, because the mean of its divisors is an integer number (400921479).

Almost surely, 2^801842957 is an apocalyptic number.

It is an amenable number.

801842957 is a deficient number, since it is larger than the sum of its proper divisors (1).

801842957 is an equidigital number, since it uses as much as digits as its factorization.

801842957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 801842957 is about 28316.8316907100. The cubic root of 801842957 is about 929.0300740750.

The spelling of 801842957 in words is "eight hundred one million, eight hundred forty-two thousand, nine hundred fifty-seven".