1850812897 has 2 divisors, whose sum is σ = 1850812898. Its totient is φ = 1850812896.

The previous prime is 1850812867. The next prime is 1850812903. The reversal of 1850812897 is 7982180581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1761396961 + 89415936 = 41969^2 + 9456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1850812897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1850812897.

It is not a weakly prime, because it can be changed into another prime (1850812867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925406448 + 925406449.

It is an arithmetic number, because the mean of its divisors is an integer number (925406449).

Almost surely, 2^1850812897 is an apocalyptic number.

It is an amenable number.

1850812897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850812897 is an equidigital number, since it uses as much as digits as its factorization.

1850812897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 49.

The square root of 1850812897 is about 43021.0750330579. The cubic root of 1850812897 is about 1227.7808040417.

The spelling of 1850812897 in words is "one billion, eight hundred fifty million, eight hundred twelve thousand, eight hundred ninety-seven".