1491052320 has 384 divisors, whose sum is σ = 5617382400. Its totient is φ = 368050176.

The previous prime is 1491052301. The next prime is 1491052331. The reversal of 1491052320 is 232501941.

1491052320 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5801632 + ... + 5801888.

It is an arithmetic number, because the mean of its divisors is an integer number (14628600).

Almost surely, 2^1491052320 is an apocalyptic number.

1491052320 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 1491052320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2808691200).

1491052320 is an abundant number, since it is smaller than the sum of its proper divisors (4126330080).

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

1491052320 is a wasteful number, since it uses less digits than its factorization.

1491052320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1491052320 is about 38614.1466304773. The cubic root of 1491052320 is about 1142.4335824462.

The spelling of 1491052320 in words is "one billion, four hundred ninety-one million, fifty-two thousand, three hundred twenty".