1947563484 has 12 divisors (see below), whose sum is σ = 4544314824. Its totient is φ = 649187824.

The previous prime is 1947563483. The next prime is 1947563573. The reversal of 1947563484 is 4843657491.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1947563483) 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, 81148467 + ... + 81148490.

It is an arithmetic number, because the mean of its divisors is an integer number (378692902).

Almost surely, 2^1947563484 is an apocalyptic number.

It is an amenable number.

1947563484 is an abundant number, since it is smaller than the sum of its proper divisors (2596751340).

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

1947563484 is a wasteful number, since it uses less digits than its factorization.

1947563484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162296964 (or 162296962 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 1947563484 is about 44131.2075973454. The cubic root of 1947563484 is about 1248.8124153248.

The spelling of 1947563484 in words is "one billion, nine hundred forty-seven million, five hundred sixty-three thousand, four hundred eighty-four".