1852940861 has 2 divisors, whose sum is σ = 1852940862. Its totient is φ = 1852940860.

The previous prime is 1852940807. The next prime is 1852940899. The reversal of 1852940861 is 1680492581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1631675236 + 221265625 = 40394^2 + 14875^2 .

It is an emirp because it is prime and its reverse (1680492581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1852940861 - 2¹⁴ = 1852924477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1852940801) 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, 926470430 + 926470431.

It is an arithmetic number, because the mean of its divisors is an integer number (926470431).

Almost surely, 2^1852940861 is an apocalyptic number.

It is an amenable number.

1852940861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1852940861 is an equidigital number, since it uses as much as digits as its factorization.

1852940861 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1852940861 is about 43045.7995744068. The cubic root of 1852940861 is about 1228.2511690168.

The spelling of 1852940861 in words is "one billion, eight hundred fifty-two million, nine hundred forty thousand, eight hundred sixty-one".