1648398195 has 20 divisors (see below), whose sum is σ = 2954907120. Its totient is φ = 879145488.

The previous prime is 1648398179. The next prime is 1648398197. The reversal of 1648398195 is 5918938461.

1648398195 is a `hidden beast` number, since 1 + 64 + 8 + 398 + 195 = 666.

It is not a de Polignac number, because 1648398195 - 2⁴ = 1648398179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1648398197) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2034655 + ... + 2035464.

It is an arithmetic number, because the mean of its divisors is an integer number (147745356).

Almost surely, 2^1648398195 is an apocalyptic number.

1648398195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1648398195 is a deficient number, since it is larger than the sum of its proper divisors (1306508925).

1648398195 is an equidigital number, since it uses as much as digits as its factorization.

1648398195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070136 (or 4070127 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 1648398195 is about 40600.4703790486. The cubic root of 1648398195 is about 1181.2832432065.

The spelling of 1648398195 in words is "one billion, six hundred forty-eight million, three hundred ninety-eight thousand, one hundred ninety-five".