1948646465 has 8 divisors (see below), whose sum is σ = 2338938600. Its totient is φ = 1558541952.

The previous prime is 1948646459. The next prime is 1948646473. The reversal of 1948646465 is 5646468491.

It can be written as a sum of positive squares in 4 ways, for example, as 1176695809 + 771950656 = 34303^2 + 27784^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1948646465 - 2²⁰ = 1947597889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22940 + ... + 66509.

It is an arithmetic number, because the mean of its divisors is an integer number (292367325).

Almost surely, 2^1948646465 is an apocalyptic number.

It is an amenable number.

1948646465 is a deficient number, since it is larger than the sum of its proper divisors (390292135).

1948646465 is an equidigital number, since it uses as much as digits as its factorization.

1948646465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93811.

The product of its digits is 4976640, while the sum is 53.

The square root of 1948646465 is about 44143.4759052796. The cubic root of 1948646465 is about 1249.0438480052.

The spelling of 1948646465 in words is "one billion, nine hundred forty-eight million, six hundred forty-six thousand, four hundred sixty-five".