851890201 has 2 divisors, whose sum is σ = 851890202. Its totient is φ = 851890200.

The previous prime is 851890159. The next prime is 851890223. The reversal of 851890201 is 102098158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638876176 + 213014025 = 25276^2 + 14595^2 .

It is a cyclic number.

It is not a de Polignac number, because 851890201 - 2⁷ = 851890073 is a prime.

It is not a weakly prime, because it can be changed into another prime (851890001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425945100 + 425945101.

It is an arithmetic number, because the mean of its divisors is an integer number (425945101).

Almost surely, 2^851890201 is an apocalyptic number.

It is an amenable number.

851890201 is a deficient number, since it is larger than the sum of its proper divisors (1).

851890201 is an equidigital number, since it uses as much as digits as its factorization.

851890201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 851890201 is about 29187.1581521737. The cubic root of 851890201 is about 947.9698849383.

The spelling of 851890201 in words is "eight hundred fifty-one million, eight hundred ninety thousand, two hundred one".