1443820889464 has 8 divisors (see below), whose sum is σ = 2707164167760. Its totient is φ = 721910444728.

The previous prime is 1443820889461. The next prime is 1443820889473. The reversal of 1443820889464 is 4649880283441.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1443820889464² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443820889461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90238805584 + ... + 90238805599.

It is an arithmetic number, because the mean of its divisors is an integer number (338395520970).

Almost surely, 2^{1443820889464} is an apocalyptic number.

It is an amenable number.

1443820889464 is a deficient number, since it is larger than the sum of its proper divisors (1263343278296).

1443820889464 is a wasteful number, since it uses less digits than its factorization.

1443820889464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180477611189 (or 180477611185 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 61.

The spelling of 1443820889464 in words is "one trillion, four hundred forty-three billion, eight hundred twenty million, eight hundred eighty-nine thousand, four hundred sixty-four".