1802754221 has 2 divisors, whose sum is σ = 1802754222. Its totient is φ = 1802754220.

The previous prime is 1802754157. The next prime is 1802754229. The reversal of 1802754221 is 1224572081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1774515625 + 28238596 = 42125^2 + 5314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1802754221 - 2⁶ = 1802754157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1802754229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901377110 + 901377111.

It is an arithmetic number, because the mean of its divisors is an integer number (901377111).

Almost surely, 2^1802754221 is an apocalyptic number.

It is an amenable number.

1802754221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802754221 is an equidigital number, since it uses as much as digits as its factorization.

1802754221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 1802754221 is about 42458.8532699601. The cubic root of 1802754221 is about 1217.0605173240.

The spelling of 1802754221 in words is "one billion, eight hundred two million, seven hundred fifty-four thousand, two hundred twenty-one".