2143251064 has 64 divisors (see below), whose sum is σ = 4369939200. Its totient is φ = 981517824.

The previous prime is 2143251037. The next prime is 2143251073. The reversal of 2143251064 is 4601523412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2215909 + ... + 2216875.

It is an arithmetic number, because the mean of its divisors is an integer number (68280300).

Almost surely, 2^2143251064 is an apocalyptic number.

It is an amenable number.

2143251064 is an abundant number, since it is smaller than the sum of its proper divisors (2226688136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143251064 is a wasteful number, since it uses less digits than its factorization.

2143251064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2143251064 is about 46295.2596277416. The cubic root of 2143251064 is about 1289.3109843305.

Adding to 2143251064 its reverse (4601523412), we get a palindrome (6744774476).

The spelling of 2143251064 in words is "two billion, one hundred forty-three million, two hundred fifty-one thousand, sixty-four".