8161839456 has 48 divisors (see below), whose sum is σ = 21432480048. Its totient is φ = 2719641600.

The previous prime is 8161839421. The next prime is 8161839461. The reversal of 8161839456 is 6549381618.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 8161839399 and 8161839408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285996 + ... + 313236.

It is an arithmetic number, because the mean of its divisors is an integer number (446510001).

Almost surely, 2^8161839456 is an apocalyptic number.

It is an amenable number.

8161839456 is an abundant number, since it is smaller than the sum of its proper divisors (13270640592).

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

8161839456 is a wasteful number, since it uses less digits than its factorization.

8161839456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30375 (or 30367 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 8161839456 is about 90342.8993114567. The cubic root of 8161839456 is about 2013.3966853838.

The spelling of 8161839456 in words is "eight billion, one hundred sixty-one million, eight hundred thirty-nine thousand, four hundred fifty-six".