1491582652 has 48 divisors (see below), whose sum is σ = 3168523008. Its totient is φ = 599765760.

The previous prime is 1491582643. The next prime is 1491582689. The reversal of 1491582652 is 2562851941.

It is a junction number, because it is equal to n+sod(n) for n = 1491582599 and 1491582608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152823 + ... + 162289.

It is an arithmetic number, because the mean of its divisors is an integer number (66010896).

Almost surely, 2^1491582652 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 1491582652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584261504).

1491582652 is an abundant number, since it is smaller than the sum of its proper divisors (1676940356).

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

1491582652 is a wasteful number, since it uses less digits than its factorization.

1491582652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826 (or 9824 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 1491582652 is about 38621.0130887319. The cubic root of 1491582652 is about 1142.5690119147.

The spelling of 1491582652 in words is "one billion, four hundred ninety-one million, five hundred eighty-two thousand, six hundred fifty-two".