1494821811648 has 896 divisors, whose sum is σ = 4878506880000. Its totient is φ = 398715125760.

The previous prime is 1494821811641. The next prime is 1494821811649. The reversal of 1494821811648 is 8461181284941.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1494821811641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6415544140 + ... + 6415544372.

Almost surely, 2^{1494821811648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1494821811648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2439253440000).

1494821811648 is an abundant number, since it is smaller than the sum of its proper divisors (3383685068352).

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

1494821811648 is a wasteful number, since it uses less digits than its factorization.

1494821811648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 483 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 57.

The spelling of 1494821811648 in words is "one trillion, four hundred ninety-four billion, eight hundred twenty-one million, eight hundred eleven thousand, six hundred forty-eight".