1789634656 has 24 divisors (see below), whose sum is σ = 3525752664. Its totient is φ = 894205440.

The previous prime is 1789634647. The next prime is 1789634677. The reversal of 1789634656 is 6564369871.

It is a junction number, because it is equal to n+sod(n) for n = 1789634597 and 1789634606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30376 + ... + 67096.

It is an arithmetic number, because the mean of its divisors is an integer number (146906361).

Almost surely, 2^1789634656 is an apocalyptic number.

1789634656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1789634656 is a deficient number, since it is larger than the sum of its proper divisors (1736118008).

1789634656 is a wasteful number, since it uses less digits than its factorization.

1789634656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38254 (or 38246 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The square root of 1789634656 is about 42304.0737518268. The cubic root of 1789634656 is about 1214.1009354742.

The spelling of 1789634656 in words is "one billion, seven hundred eighty-nine million, six hundred thirty-four thousand, six hundred fifty-six".