2146175985 has 16 divisors (see below), whose sum is σ = 3458589120. Its totient is φ = 1136391360.

The previous prime is 2146175981. The next prime is 2146175987. The reversal of 2146175985 is 5895716412.

It is a happy number.

It is not a de Polignac number, because 2146175985 - 2² = 2146175981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2146175981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512586 + ... + 516755.

It is an arithmetic number, because the mean of its divisors is an integer number (216161820).

Almost surely, 2^2146175985 is an apocalyptic number.

It is an amenable number.

2146175985 is a deficient number, since it is larger than the sum of its proper divisors (1312413135).

2146175985 is a wasteful number, since it uses less digits than its factorization.

2146175985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029488.

The product of its digits is 604800, while the sum is 48.

The square root of 2146175985 is about 46326.8387114856. The cubic root of 2146175985 is about 1289.8972305606.

The spelling of 2146175985 in words is "two billion, one hundred forty-six million, one hundred seventy-five thousand, nine hundred eighty-five".