1947044436 has 12 divisors (see below), whose sum is σ = 4543103712. Its totient is φ = 649014808.

The previous prime is 1947044417. The next prime is 1947044447. The reversal of 1947044436 is 6344407491.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81126840 + ... + 81126863.

It is an arithmetic number, because the mean of its divisors is an integer number (378591976).

Almost surely, 2^1947044436 is an apocalyptic number.

It is an amenable number.

1947044436 is an abundant number, since it is smaller than the sum of its proper divisors (2596059276).

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

1947044436 is a wasteful number, since it uses less digits than its factorization.

1947044436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162253710 (or 162253708 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 1947044436 is about 44125.3264690472. The cubic root of 1947044436 is about 1248.7014645249.

The spelling of 1947044436 in words is "one billion, nine hundred forty-seven million, forty-four thousand, four hundred thirty-six".