2146623809 has 8 divisors (see below), whose sum is σ = 2391596928. Its totient is φ = 1909954960.

The previous prime is 2146623803. The next prime is 2146623811. The reversal of 2146623809 is 9083266412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2146623809 - 2¹⁶ = 2146558273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2146623803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2075522 + ... + 2076555.

It is an arithmetic number, because the mean of its divisors is an integer number (298949616).

Almost surely, 2^2146623809 is an apocalyptic number.

It is an amenable number.

2146623809 is a deficient number, since it is larger than the sum of its proper divisors (244973119).

2146623809 is a wasteful number, since it uses less digits than its factorization.

2146623809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152135.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 2146623809 is about 46331.6717699675. The cubic root of 2146623809 is about 1289.9869415580.

The spelling of 2146623809 in words is "two billion, one hundred forty-six million, six hundred twenty-three thousand, eight hundred nine".