1871145223 has 2 divisors, whose sum is σ = 1871145224. Its totient is φ = 1871145222.

The previous prime is 1871145209. The next prime is 1871145233. The reversal of 1871145223 is 3225411781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1871145223 - 2¹³ = 1871137031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1871145233) 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, 935572611 + 935572612.

It is an arithmetic number, because the mean of its divisors is an integer number (935572612).

Almost surely, 2^1871145223 is an apocalyptic number.

1871145223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1871145223 is an equidigital number, since it uses as much as digits as its factorization.

1871145223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 1871145223 is about 43256.7361575050. The cubic root of 1871145223 is about 1232.2604176175.

The spelling of 1871145223 in words is "one billion, eight hundred seventy-one million, one hundred forty-five thousand, two hundred twenty-three".