1630238668864 has 63 divisors (see below), whose sum is σ = 3503278779687. Its totient is φ = 752356560384.

The previous prime is 1630238668847. The next prime is 1630238668901. The reversal of 1630238668864 is 4688668320361.

The square root of 1630238668864 is 1276808.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 970634803264 + 659603865600 = 985208^2 + 812160^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 132781894 + ... + 132794170.

Almost surely, 2^{1630238668864} is an apocalyptic number.

1630238668864 is the 1276808-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630238668864

1630238668864 is an abundant number, since it is smaller than the sum of its proper divisors (1873040110823).

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

1630238668864 is an frugal number, since it uses more digits than its factorization.

1630238668864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24592 (or 12292 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 61.

The spelling of 1630238668864 in words is "one trillion, six hundred thirty billion, two hundred thirty-eight million, six hundred sixty-eight thousand, eight hundred sixty-four".