1947968916 has 24 divisors (see below), whose sum is σ = 4546548384. Its totient is φ = 649139040.

The previous prime is 1947968881. The next prime is 1947968927. The reversal of 1947968916 is 6198697491.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1947968916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25171 + ... + 67301.

It is an arithmetic number, because the mean of its divisors is an integer number (189439516).

Almost surely, 2^1947968916 is an apocalyptic number.

It is an amenable number.

1947968916 is an abundant number, since it is smaller than the sum of its proper divisors (2598579468).

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

1947968916 is a wasteful number, since it uses less digits than its factorization.

1947968916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45991 (or 45989 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 60.

The square root of 1947968916 is about 44135.8008424000. The cubic root of 1947968916 is about 1248.8990660536.

The spelling of 1947968916 in words is "one billion, nine hundred forty-seven million, nine hundred sixty-eight thousand, nine hundred sixteen".