1802270243 has 2 divisors, whose sum is σ = 1802270244. Its totient is φ = 1802270242.

The previous prime is 1802270237. The next prime is 1802270257. The reversal of 1802270243 is 3420722081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1802270243 - 2²⁴ = 1785493027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1802270263) 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, 901135121 + 901135122.

It is an arithmetic number, because the mean of its divisors is an integer number (901135122).

Almost surely, 2^1802270243 is an apocalyptic number.

1802270243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802270243 is an equidigital number, since it uses as much as digits as its factorization.

1802270243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 1802270243 is about 42453.1535106640. The cubic root of 1802270243 is about 1216.9515945014.

The spelling of 1802270243 in words is "one billion, eight hundred two million, two hundred seventy thousand, two hundred forty-three".