4971974891 has 32 divisors (see below), whose sum is σ = 5783400000. Its totient is φ = 4235632128.

The previous prime is 4971974879. The next prime is 4971974923. The reversal of 4971974891 is 1984791794.

It is not a de Polignac number, because 4971974891 - 2⁶ = 4971974827 is a prime.

It is a super-4 number, since 4×4971974891⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4971974891.

It is not an unprimeable number, because it can be changed into a prime (4971974291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1949285 + ... + 1951833.

It is an arithmetic number, because the mean of its divisors is an integer number (180731250).

Almost surely, 2^4971974891 is an apocalyptic number.

4971974891 is a deficient number, since it is larger than the sum of its proper divisors (811425109).

4971974891 is a wasteful number, since it uses less digits than its factorization.

4971974891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783.

The product of its digits is 4572288, while the sum is 59.

The square root of 4971974891 is about 70512.2322083197. The cubic root of 4971974891 is about 1706.7751415266.

The spelling of 4971974891 in words is "four billion, nine hundred seventy-one million, nine hundred seventy-four thousand, eight hundred ninety-one".