1801223141 has 2 divisors, whose sum is σ = 1801223142. Its totient is φ = 1801223140.

The previous prime is 1801223131. The next prime is 1801223143. The reversal of 1801223141 is 1413221081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1770642241 + 30580900 = 42079^2 + 5530^2 .

It is an emirp because it is prime and its reverse (1413221081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1801223141 - 2⁶ = 1801223077 is a prime.

Together with 1801223143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1801223143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900611570 + 900611571.

It is an arithmetic number, because the mean of its divisors is an integer number (900611571).

Almost surely, 2^1801223141 is an apocalyptic number.

It is an amenable number.

1801223141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801223141 is an equidigital number, since it uses as much as digits as its factorization.

1801223141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1801223141 is about 42440.8192781431. The cubic root of 1801223141 is about 1216.7158697143.

The spelling of 1801223141 in words is "one billion, eight hundred one million, two hundred twenty-three thousand, one hundred forty-one".