1648195923 has 16 divisors (see below), whose sum is σ = 2399385600. Its totient is φ = 998069280.

The previous prime is 1648195921. The next prime is 1648195931. The reversal of 1648195923 is 3295918461.

It is not a de Polignac number, because 1648195923 - 2¹ = 1648195921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1648195921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20238 + ... + 60876.

It is an arithmetic number, because the mean of its divisors is an integer number (149961600).

Almost surely, 2^1648195923 is an apocalyptic number.

1648195923 is a deficient number, since it is larger than the sum of its proper divisors (751189677).

1648195923 is a wasteful number, since it uses less digits than its factorization.

1648195923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41882.

The product of its digits is 466560, while the sum is 48.

The square root of 1648195923 is about 40597.9792970044. The cubic root of 1648195923 is about 1181.2349235107.

The spelling of 1648195923 in words is "one billion, six hundred forty-eight million, one hundred ninety-five thousand, nine hundred twenty-three".