1491627984 has 240 divisors, whose sum is σ = 5098007040. Its totient is φ = 366854400.

The previous prime is 1491627941. The next prime is 1491628001. The reversal of 1491627984 is 4897261941.

1491627984 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 771499 + ... + 773429.

It is an arithmetic number, because the mean of its divisors is an integer number (21241696).

Almost surely, 2^1491627984 is an apocalyptic number.

1491627984 is a gapful number since it is divisible by the number (14) 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 1491627984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2549003520).

1491627984 is an abundant number, since it is smaller than the sum of its proper divisors (3606379056).

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

1491627984 is a wasteful number, since it uses less digits than its factorization.

1491627984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1973 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 1491627984 is about 38621.5999668579. The cubic root of 1491627984 is about 1142.5805867373.

The spelling of 1491627984 in words is "one billion, four hundred ninety-one million, six hundred twenty-seven thousand, nine hundred eighty-four".