2146784421 has 8 divisors (see below), whose sum is σ = 2961082080. Its totient is φ = 1381838192.

The previous prime is 2146784399. The next prime is 2146784449. The reversal of 2146784421 is 1244876412.

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 2146784421 - 2⁵ = 2146784389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2146784421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146784221) 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, 12337755 + ... + 12337928.

It is an arithmetic number, because the mean of its divisors is an integer number (370135260).

Almost surely, 2^2146784421 is an apocalyptic number.

It is an amenable number.

2146784421 is a deficient number, since it is larger than the sum of its proper divisors (814297659).

2146784421 is a wasteful number, since it uses less digits than its factorization.

2146784421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24675715.

The product of its digits is 86016, while the sum is 39.

The square root of 2146784421 is about 46333.4050227263. The cubic root of 2146784421 is about 1290.0191133518.

The spelling of 2146784421 in words is "two billion, one hundred forty-six million, seven hundred eighty-four thousand, four hundred twenty-one".