1947971496 has 16 divisors (see below), whose sum is σ = 4869928800. Its totient is φ = 649323824.

The previous prime is 1947971491. The next prime is 1947971497. The reversal of 1947971496 is 6941797491.

It is not an unprimeable number, because it can be changed into a prime (1947971491) 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, 40582716 + ... + 40582763.

It is an arithmetic number, because the mean of its divisors is an integer number (304370550).

Almost surely, 2^1947971496 is an apocalyptic number.

It is an amenable number.

1947971496 is an abundant number, since it is smaller than the sum of its proper divisors (2921957304).

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

1947971496 is a wasteful number, since it uses less digits than its factorization.

1947971496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81165488 (or 81165484 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 57.

The square root of 1947971496 is about 44135.8300703635. The cubic root of 1947971496 is about 1248.8996174241.

The spelling of 1947971496 in words is "one billion, nine hundred forty-seven million, nine hundred seventy-one thousand, four hundred ninety-six".