2443387901956 has 9 divisors (see below), whose sum is σ = 4275934299399.
Its totient is φ = 1221692387844.
The previous prime is 2443387901917. The next prime is 2443387901963. The reversal of 2443387901956 is 6591097833442.
It is a happy number.
The square root of 2443387901956 is 1563134.
It is a perfect power (a square), and thus also a powerful number.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2443387901894 and 2443387901903.
It is an unprimeable number.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2735485 + ... + 3517051.
It is a 2-persistent number, because it is pandigital, and so is 2⋅2443387901956 = 4886775803912, but 3⋅2443387901956 = 7330163705868 is not.
Almost surely, 22443387901956 is an apocalyptic number.
2443387901956 is the 1563134-th square number.
It is an amenable number.
2443387901956 is a deficient number, since it is larger than the sum of its proper divisors (1832546397443).
2443387901956 is an frugal number, since it uses more digits than its factorization.
2443387901956 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1563138 (or 781569 counting only the distinct ones).
The product of its (nonzero) digits is 39191040, while the sum is 61.
The spelling of 2443387901956 in words is "two trillion, four hundred forty-three billion, three hundred eighty-seven million, nine hundred one thousand, nine hundred fifty-six".