1020223249 has 2 divisors, whose sum is σ = 1020223250. Its totient is φ = 1020223248.

The previous prime is 1020223247. The next prime is 1020223291. The reversal of 1020223249 is 9423220201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814817025 + 205406224 = 28545^2 + 14332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020223249 - 2¹ = 1020223247 is a prime.

Together with 1020223247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1020223247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510111624 + 510111625.

It is an arithmetic number, because the mean of its divisors is an integer number (510111625).

Almost surely, 2^1020223249 is an apocalyptic number.

It is an amenable number.

1020223249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020223249 is an equidigital number, since it uses as much as digits as its factorization.

1020223249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1020223249 is about 31940.9337527881. The cubic root of 1020223249 is about 1006.6961445666.

The spelling of 1020223249 in words is "one billion, twenty million, two hundred twenty-three thousand, two hundred forty-nine".