1855141667 has 2 divisors, whose sum is σ = 1855141668. Its totient is φ = 1855141666.

The previous prime is 1855141633. The next prime is 1855141681. The reversal of 1855141667 is 7661415581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1855141667 - 2⁸ = 1855141411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1855141867) 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, 927570833 + 927570834.

It is an arithmetic number, because the mean of its divisors is an integer number (927570834).

Almost surely, 2^1855141667 is an apocalyptic number.

1855141667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855141667 is an equidigital number, since it uses as much as digits as its factorization.

1855141667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 44.

The square root of 1855141667 is about 43071.3555277751. The cubic root of 1855141667 is about 1228.7372563132.

The spelling of 1855141667 in words is "one billion, eight hundred fifty-five million, one hundred forty-one thousand, six hundred sixty-seven".