2143306690 has 32 divisors (see below), whose sum is σ = 4502905344. Its totient is φ = 719211840.

The previous prime is 2143306679. The next prime is 2143306699. The reversal of 2143306690 is 966033412.

It is a happy number.

It is a super-2 number, since 2×2143306690² = 9187527134797512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2143306699) 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, 322441 + ... + 329020.

It is an arithmetic number, because the mean of its divisors is an integer number (140715792).

Almost surely, 2^2143306690 is an apocalyptic number.

2143306690 is an abundant number, since it is smaller than the sum of its proper divisors (2359598654).

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

2143306690 is a wasteful number, since it uses less digits than its factorization.

2143306690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651522.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 2143306690 is about 46295.8603980961. The cubic root of 2143306690 is about 1289.3221385055.

The spelling of 2143306690 in words is "two billion, one hundred forty-three million, three hundred six thousand, six hundred ninety".