1630223289 has 6 divisors (see below), whose sum is σ = 2354766986. Its totient is φ = 1086815520.

The previous prime is 1630223281. The next prime is 1630223303. The reversal of 1630223289 is 9823220361.

It can be written as a sum of positive squares in only one way, i.e., 1038128400 + 592094889 = 32220^2 + 24333^2 .

It is not a de Polignac number, because 1630223289 - 2³ = 1630223281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630223281) 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 in 5 ways as a sum of consecutive naturals, for example, 90567952 + ... + 90567969.

Almost surely, 2^1630223289 is an apocalyptic number.

It is an amenable number.

1630223289 is a deficient number, since it is larger than the sum of its proper divisors (724543697).

1630223289 is a wasteful number, since it uses less digits than its factorization.

1630223289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181135927 (or 181135924 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1630223289 is about 40376.0236898088. The cubic root of 1630223289 is about 1176.9256582096.

The spelling of 1630223289 in words is "one billion, six hundred thirty million, two hundred twenty-three thousand, two hundred eighty-nine".