1230408940644 has 81 divisors (see below), whose sum is σ = 3368086952139. Its totient is φ = 378560744640.

The previous prime is 1230408940613. The next prime is 1230408940669. The reversal of 1230408940644 is 4460498040321.

The square root of 1230408940644 is 1109238.

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

1230408940644 is a `hidden beast` number, since 1 + 230 + 4 + 0 + 8 + 9 + 406 + 4 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 49031244900 + 1181377695744 = 221430^2 + 1086912^2 .

It is a super-2 number, since 2×1230408940644² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1230408940644.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 86513454 + ... + 86527674.

Almost surely, 2^{1230408940644} is an apocalyptic number.

1230408940644 is the 1109238-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230408940644

1230408940644 is an abundant number, since it is smaller than the sum of its proper divisors (2137678011495).

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

1230408940644 is an equidigital number, since it uses as much as digits as its factorization.

1230408940644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28478 (or 14239 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 1230408940644 in words is "one trillion, two hundred thirty billion, four hundred eight million, nine hundred forty thousand, six hundred forty-four".