4693971981 has 16 divisors (see below), whose sum is σ = 6462650880. Its totient is φ = 3027370560.

The previous prime is 4693971937. The next prime is 4693972013. The reversal of 4693971981 is 1891793964.

It is not a de Polignac number, because 4693971981 - 2¹⁵ = 4693939213 is a prime.

It is a super-2 number, since 2×4693971981² = 44066745916826128722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4693971901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364651 + ... + 377303.

It is an arithmetic number, because the mean of its divisors is an integer number (403915680).

Almost surely, 2^4693971981 is an apocalyptic number.

It is an amenable number.

4693971981 is a deficient number, since it is larger than the sum of its proper divisors (1768678899).

4693971981 is a wasteful number, since it uses less digits than its factorization.

4693971981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16676.

The product of its digits is 2939328, while the sum is 57.

The square root of 4693971981 is about 68512.5680514167. The cubic root of 4693971981 is about 1674.3522534081.

The spelling of 4693971981 in words is "four billion, six hundred ninety-three million, nine hundred seventy-one thousand, nine hundred eighty-one".