1634788648 has 8 divisors (see below), whose sum is σ = 3065228730. Its totient is φ = 817394320.

The previous prime is 1634788619. The next prime is 1634788651. The reversal of 1634788648 is 8468874361.

It can be written as a sum of positive squares in only one way, i.e., 1502492644 + 132296004 = 38762^2 + 11502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102174283 + ... + 102174298.

Almost surely, 2^1634788648 is an apocalyptic number.

It is an amenable number.

1634788648 is a deficient number, since it is larger than the sum of its proper divisors (1430440082).

1634788648 is a wasteful number, since it uses less digits than its factorization.

1634788648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204348587 (or 204348583 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The square root of 1634788648 is about 40432.5196840365. The cubic root of 1634788648 is about 1178.0232747719.

The spelling of 1634788648 in words is "one billion, six hundred thirty-four million, seven hundred eighty-eight thousand, six hundred forty-eight".