1491048000 has 672 divisors, whose sum is σ = 6057717120. Its totient is φ = 360806400.

The previous prime is 1491047981. The next prime is 1491048001. The reversal of 1491048000 is 8401941.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1491048001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25271971 + ... + 25272029.

It is an arithmetic number, because the mean of its divisors is an integer number (9014460).

Almost surely, 2^1491048000 is an apocalyptic number.

1491048000 is a gapful number since it is divisible by the number (10) 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 1491048000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3028858560).

1491048000 is an abundant number, since it is smaller than the sum of its proper divisors (4566669120).

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

1491048000 is an equidigital number, since it uses as much as digits as its factorization.

1491048000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1491048000 is about 38614.0906923884. The cubic root of 1491048000 is about 1142.4324791274.

Adding to 1491048000 its reverse (8401941), we get a palindrome (1499449941).

The spelling of 1491048000 in words is "one billion, four hundred ninety-one million, forty-eight thousand".