1628744633 has 2 divisors, whose sum is σ = 1628744634. Its totient is φ = 1628744632.

The previous prime is 1628744629. The next prime is 1628744671. The reversal of 1628744633 is 3364478261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1626750889 + 1993744 = 40333^2 + 1412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1628744633 - 2² = 1628744629 is a prime.

It is not a weakly prime, because it can be changed into another prime (1628744693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814372316 + 814372317.

It is an arithmetic number, because the mean of its divisors is an integer number (814372317).

Almost surely, 2^1628744633 is an apocalyptic number.

It is an amenable number.

1628744633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628744633 is an equidigital number, since it uses as much as digits as its factorization.

1628744633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 44.

The square root of 1628744633 is about 40357.7084706255. The cubic root of 1628744633 is about 1176.5697162517.

The spelling of 1628744633 in words is "one billion, six hundred twenty-eight million, seven hundred forty-four thousand, six hundred thirty-three".