2196821038 has 4 divisors (see below), whose sum is σ = 3295231560. Its totient is φ = 1098410518.

The previous prime is 2196821027. The next prime is 2196821051. The reversal of 2196821038 is 8301286912.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549205258 + ... + 549205261.

It is an arithmetic number, because the mean of its divisors is an integer number (823807890).

Almost surely, 2^2196821038 is an apocalyptic number.

2196821038 is a deficient number, since it is larger than the sum of its proper divisors (1098410522).

2196821038 is a wasteful number, since it uses less digits than its factorization.

2196821038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098410521.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2196821038 is about 46870.2574987593. The cubic root of 2196821038 is about 1299.9647008167.

The spelling of 2196821038 in words is "two billion, one hundred ninety-six million, eight hundred twenty-one thousand, thirty-eight".