633748789 has 2 divisors, whose sum is σ = 633748790. Its totient is φ = 633748788.

The previous prime is 633748721. The next prime is 633748807. The reversal of 633748789 is 987847336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 530380900 + 103367889 = 23030^2 + 10167^2 .

It is a cyclic number.

It is not a de Polignac number, because 633748789 - 2¹⁷ = 633617717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633548789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316874394 + 316874395.

It is an arithmetic number, because the mean of its divisors is an integer number (316874395).

Almost surely, 2^633748789 is an apocalyptic number.

It is an amenable number.

633748789 is a deficient number, since it is larger than the sum of its proper divisors (1).

633748789 is an equidigital number, since it uses as much as digits as its factorization.

633748789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The square root of 633748789 is about 25174.3676981171. The cubic root of 633748789 is about 858.9588938441.

The spelling of 633748789 in words is "six hundred thirty-three million, seven hundred forty-eight thousand, seven hundred eighty-nine".