1648763117 has 4 divisors (see below), whose sum is σ = 1701949056. Its totient is φ = 1595577180.

The previous prime is 1648763069. The next prime is 1648763161. The reversal of 1648763117 is 7113678461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1648763117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648763317) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 26592923 + ... + 26592984.

It is an arithmetic number, because the mean of its divisors is an integer number (425487264).

Almost surely, 2^1648763117 is an apocalyptic number.

It is an amenable number.

1648763117 is a deficient number, since it is larger than the sum of its proper divisors (53185939).

1648763117 is an equidigital number, since it uses as much as digits as its factorization.

1648763117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53185938.

The product of its digits is 169344, while the sum is 44.

The square root of 1648763117 is about 40604.9641915862. The cubic root of 1648763117 is about 1181.3704075091.

The spelling of 1648763117 in words is "one billion, six hundred forty-eight million, seven hundred sixty-three thousand, one hundred seventeen".