1489817691648 has 800 divisors, whose sum is σ = 5251706681760. Its totient is φ = 414534205440.

The previous prime is 1489817691641. The next prime is 1489817691827. The reversal of 1489817691648 is 8461967189841.

1489817691648 is a `hidden beast` number, since 1 + 489 + 8 + 17 + 6 + 91 + 6 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489817691641) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1358083036 + ... + 1358084132.

Almost surely, 2^{1489817691648} is an apocalyptic number.

1489817691648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1489817691648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2625853340880).

1489817691648 is an abundant number, since it is smaller than the sum of its proper divisors (3761888990112).

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

1489817691648 is a wasteful number, since it uses less digits than its factorization.

1489817691648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1355 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 72.

The spelling of 1489817691648 in words is "one trillion, four hundred eighty-nine billion, eight hundred seventeen million, six hundred ninety-one thousand, six hundred forty-eight".