1855271423 has 2 divisors, whose sum is σ = 1855271424. Its totient is φ = 1855271422.

The previous prime is 1855271419. The next prime is 1855271437. The reversal of 1855271423 is 3241725581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1855271423 - 2² = 1855271419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855271623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927635711 + 927635712.

It is an arithmetic number, because the mean of its divisors is an integer number (927635712).

Almost surely, 2^1855271423 is an apocalyptic number.

1855271423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855271423 is an equidigital number, since it uses as much as digits as its factorization.

1855271423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 1855271423 is about 43072.8617925487. The cubic root of 1855271423 is about 1228.7659032385.

The spelling of 1855271423 in words is "one billion, eight hundred fifty-five million, two hundred seventy-one thousand, four hundred twenty-three".