1648529917 has 2 divisors, whose sum is σ = 1648529918. Its totient is φ = 1648529916.

The previous prime is 1648529903. The next prime is 1648529923. The reversal of 1648529917 is 7199258461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1555040356 + 93489561 = 39434^2 + 9669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648529917 - 2²³ = 1640141309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648529957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824264958 + 824264959.

It is an arithmetic number, because the mean of its divisors is an integer number (824264959).

Almost surely, 2^1648529917 is an apocalyptic number.

It is an amenable number.

1648529917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648529917 is an equidigital number, since it uses as much as digits as its factorization.

1648529917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 52.

The square root of 1648529917 is about 40602.0925199675. The cubic root of 1648529917 is about 1181.3147074582.

The spelling of 1648529917 in words is "one billion, six hundred forty-eight million, five hundred twenty-nine thousand, nine hundred seventeen".