1491782055 has 32 divisors (see below), whose sum is σ = 2530617600. Its totient is φ = 748300032.

The previous prime is 1491782053. The next prime is 1491782059. The reversal of 1491782055 is 5502871941.

It is not a de Polignac number, because 1491782055 - 2¹ = 1491782053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491781998 and 1491782016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491782051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20787 + ... + 58443.

It is an arithmetic number, because the mean of its divisors is an integer number (79081800).

Almost surely, 2^1491782055 is an apocalyptic number.

1491782055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1491782055 is a deficient number, since it is larger than the sum of its proper divisors (1038835545).

1491782055 is a wasteful number, since it uses less digits than its factorization.

1491782055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37823.

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 1491782055 is about 38623.5945375362. The cubic root of 1491782055 is about 1142.6199246229.

The spelling of 1491782055 in words is "one billion, four hundred ninety-one million, seven hundred eighty-two thousand, fifty-five".