1648852745 has 4 divisors (see below), whose sum is σ = 1978623300. Its totient is φ = 1319082192.

The previous prime is 1648852717. The next prime is 1648852783. The reversal of 1648852745 is 5472588461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5472588461 = 359 ⋅15243979.

It can be written as a sum of positive squares in 2 ways, for example, as 494484169 + 1154368576 = 22237^2 + 33976^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648852745 - 2⁸ = 1648852489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1648852693 and 1648852702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164885270 + ... + 164885279.

It is an arithmetic number, because the mean of its divisors is an integer number (494655825).

Almost surely, 2^1648852745 is an apocalyptic number.

It is an amenable number.

1648852745 is a deficient number, since it is larger than the sum of its proper divisors (329770555).

1648852745 is an equidigital number, since it uses as much as digits as its factorization.

1648852745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329770554.

The product of its digits is 2150400, while the sum is 50.

The square root of 1648852745 is about 40606.0678347461. The cubic root of 1648852745 is about 1181.3918138485.

The spelling of 1648852745 in words is "one billion, six hundred forty-eight million, eight hundred fifty-two thousand, seven hundred forty-five".