1630245553 has 2 divisors, whose sum is σ = 1630245554. Its totient is φ = 1630245552.

The previous prime is 1630245521. The next prime is 1630245593. The reversal of 1630245553 is 3555420361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1607368464 + 22877089 = 40092^2 + 4783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630245553 - 2⁵ = 1630245521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630245593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815122776 + 815122777.

It is an arithmetic number, because the mean of its divisors is an integer number (815122777).

Almost surely, 2^1630245553 is an apocalyptic number.

It is an amenable number.

1630245553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630245553 is an equidigital number, since it uses as much as digits as its factorization.

1630245553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 1630245553 is about 40376.2993970473. The cubic root of 1630245553 is about 1176.9310159529.

The spelling of 1630245553 in words is "one billion, six hundred thirty million, two hundred forty-five thousand, five hundred fifty-three".