2105195648 has 16 divisors (see below), whose sum is σ = 4193944710. Its totient is φ = 1052597760.

The previous prime is 2105195639. The next prime is 2105195657. The reversal of 2105195648 is 8465915012.

It is an interprime number because it is at equal distance from previous prime (2105195639) and next prime (2105195657).

It can be written as a sum of positive squares in only one way, i.e., 1915637824 + 189557824 = 43768^2 + 13768^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8223293 + ... + 8223548.

Almost surely, 2^2105195648 is an apocalyptic number.

It is an amenable number.

2105195648 is a deficient number, since it is larger than the sum of its proper divisors (2088749062).

2105195648 is an equidigital number, since it uses as much as digits as its factorization.

2105195648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16446855 (or 16446843 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 2105195648 is about 45882.4110961924. The cubic root of 2105195648 is about 1281.6343965710.

The spelling of 2105195648 in words is "two billion, one hundred five million, one hundred ninety-five thousand, six hundred forty-eight".