850001953 has 2 divisors, whose sum is σ = 850001954. Its totient is φ = 850001952.

The previous prime is 850001951. The next prime is 850001963. The reversal of 850001953 is 359100058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842857024 + 7144929 = 29032^2 + 2673^2 .

It is a cyclic number.

It is not a de Polignac number, because 850001953 - 2¹ = 850001951 is a prime.

Together with 850001951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (850001951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425000976 + 425000977.

It is an arithmetic number, because the mean of its divisors is an integer number (425000977).

Almost surely, 2^850001953 is an apocalyptic number.

It is an amenable number.

850001953 is a deficient number, since it is larger than the sum of its proper divisors (1).

850001953 is an equidigital number, since it uses as much as digits as its factorization.

850001953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 850001953 is about 29154.7929678809. The cubic root of 850001953 is about 947.2689626814.

The spelling of 850001953 in words is "eight hundred fifty million, one thousand, nine hundred fifty-three".