1491596748 has 48 divisors (see below), whose sum is σ = 4070640000. Its totient is φ = 471029904.

The previous prime is 1491596719. The next prime is 1491596753. The reversal of 1491596748 is 8476951941.

1491596748 is a `hidden beast` number, since 1 + 4 + 9 + 1 + 596 + 7 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1491596694 and 1491596703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361398 + ... + 365501.

It is an arithmetic number, because the mean of its divisors is an integer number (84805000).

Almost surely, 2^1491596748 is an apocalyptic number.

1491596748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1491596748 is an abundant number, since it is smaller than the sum of its proper divisors (2579043252).

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

1491596748 is a wasteful number, since it uses less digits than its factorization.

1491596748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726931 (or 726923 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 1491596748 is about 38621.1955796296. The cubic root of 1491596748 is about 1142.5726111346.

The spelling of 1491596748 in words is "one billion, four hundred ninety-one million, five hundred ninety-six thousand, seven hundred forty-eight".