1855793141 has 2 divisors, whose sum is σ = 1855793142. Its totient is φ = 1855793140.

The previous prime is 1855793081. The next prime is 1855793161. The reversal of 1855793141 is 1413975581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1853646916 + 2146225 = 43054^2 + 1465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1855793141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1855793092 and 1855793101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855793161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927896570 + 927896571.

It is an arithmetic number, because the mean of its divisors is an integer number (927896571).

Almost surely, 2^1855793141 is an apocalyptic number.

It is an amenable number.

1855793141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855793141 is an equidigital number, since it uses as much as digits as its factorization.

1855793141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 44.

The square root of 1855793141 is about 43078.9175931801. The cubic root of 1855793141 is about 1228.8810722285.

The spelling of 1855793141 in words is "one billion, eight hundred fifty-five million, seven hundred ninety-three thousand, one hundred forty-one".