4543971890 has 8 divisors (see below), whose sum is σ = 8179149420. Its totient is φ = 1817588752.

The previous prime is 4543971869. The next prime is 4543971893. The reversal of 4543971890 is 981793454.

It can be written as a sum of positive squares in 2 ways, for example, as 4414672249 + 129299641 = 66443^2 + 11371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4543971890² = 41295361074220344200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4543971893) 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, 227198585 + ... + 227198604.

Almost surely, 2^4543971890 is an apocalyptic number.

4543971890 is a deficient number, since it is larger than the sum of its proper divisors (3635177530).

4543971890 is a wasteful number, since it uses less digits than its factorization.

4543971890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454397196.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 4543971890 is about 67408.9896823858. The cubic root of 4543971890 is about 1656.3236843165.

The spelling of 4543971890 in words is "four billion, five hundred forty-three million, nine hundred seventy-one thousand, eight hundred ninety".