1630122656 has 96 divisors (see below), whose sum is σ = 3490179840. Its totient is φ = 746643456.

The previous prime is 1630122607. The next prime is 1630122661. The reversal of 1630122656 is 6562210361.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3566780 + ... + 3567236.

It is an arithmetic number, because the mean of its divisors is an integer number (36356040).

Almost surely, 2^1630122656 is an apocalyptic number.

1630122656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630122656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745089920).

1630122656 is an abundant number, since it is smaller than the sum of its proper divisors (1860057184).

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

1630122656 is a wasteful number, since it uses less digits than its factorization.

1630122656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1630122656 is about 40374.7774730710. Note that the first 3 decimals coincide. The cubic root of 1630122656 is about 1176.9014406689.

The spelling of 1630122656 in words is "one billion, six hundred thirty million, one hundred twenty-two thousand, six hundred fifty-six".