1540647484 has 12 divisors (see below), whose sum is σ = 2714229000. Its totient is φ = 765153488.

The previous prime is 1540647481. The next prime is 1540647487. The reversal of 1540647484 is 4847460451.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1540647481) and next prime (1540647487).

It is a self number, because there is not a number n which added to its sum of digits gives 1540647484.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540647481) 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 3 ways as a sum of consecutive naturals, for example, 1291894 + ... + 1293085.

It is an arithmetic number, because the mean of its divisors is an integer number (226185750).

Almost surely, 2^1540647484 is an apocalyptic number.

It is an amenable number.

1540647484 is a deficient number, since it is larger than the sum of its proper divisors (1173581516).

1540647484 is a wasteful number, since it uses less digits than its factorization.

1540647484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585132 (or 2585130 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The square root of 1540647484 is about 39251.0825837963. The cubic root of 1540647484 is about 1154.9621706343.

The spelling of 1540647484 in words is "one billion, five hundred forty million, six hundred forty-seven thousand, four hundred eighty-four".