4943071981 has 8 divisors (see below), whose sum is σ = 4957632000. Its totient is φ = 4928528640.

The previous prime is 4943071961. The next prime is 4943072021. The reversal of 4943071981 is 1891703494.

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

It is a cyclic number.

It is not a de Polignac number, because 4943071981 - 2²⁵ = 4909517549 is a prime.

It is a super-2 number, since 2×4943071981² = 48867921218694528722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4943071961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810100 + ... + 816178.

It is an arithmetic number, because the mean of its divisors is an integer number (619704000).

Almost surely, 2^4943071981 is an apocalyptic number.

It is an amenable number.

4943071981 is a deficient number, since it is larger than the sum of its proper divisors (14560019).

4943071981 is a wasteful number, since it uses less digits than its factorization.

4943071981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8339.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 4943071981 is about 70306.9838707365. The cubic root of 4943071981 is about 1703.4614570855.

The spelling of 4943071981 in words is "four billion, nine hundred forty-three million, seventy-one thousand, nine hundred eighty-one".