2165140048 has 10 divisors (see below), whose sum is σ = 4194958874. Its totient is φ = 1082570016.

The previous prime is 2165139967. The next prime is 2165140049. The reversal of 2165140048 is 8400415612.

It can be written as a sum of positive squares in only one way, i.e., 1225840144 + 939299904 = 35012^2 + 30648^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165140049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67660611 + ... + 67660642.

Almost surely, 2^2165140048 is an apocalyptic number.

It is an amenable number.

2165140048 is a deficient number, since it is larger than the sum of its proper divisors (2029818826).

2165140048 is a wasteful number, since it uses less digits than its factorization.

2165140048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135321261 (or 135321255 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2165140048 is about 46531.0654079616. The cubic root of 2165140048 is about 1293.6853626587.

The spelling of 2165140048 in words is "two billion, one hundred sixty-five million, one hundred forty thousand, forty-eight".