1979543472 has 20 divisors (see below), whose sum is σ = 5113820760. Its totient is φ = 659847808.

The previous prime is 1979543459. The next prime is 1979543473. The reversal of 1979543472 is 2743459791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1979543473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20620197 + ... + 20620292.

It is an arithmetic number, because the mean of its divisors is an integer number (255691038).

Almost surely, 2^1979543472 is an apocalyptic number.

1979543472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1979543472 is an abundant number, since it is smaller than the sum of its proper divisors (3134277288).

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

1979543472 is a wasteful number, since it uses less digits than its factorization.

1979543472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41240500 (or 41240494 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 1979543472 is about 44492.0607749293. The cubic root of 1979543472 is about 1255.6107188800.

The spelling of 1979543472 in words is "one billion, nine hundred seventy-nine million, five hundred forty-three thousand, four hundred seventy-two".