4971923965 has 4 divisors (see below), whose sum is σ = 5966308764. Its totient is φ = 3977539168.

The previous prime is 4971923959. The next prime is 4971924019. The reversal of 4971923965 is 5693291794.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3811704121 + 1160219844 = 61739^2 + 34062^2 .

It is a cyclic number.

It is not a de Polignac number, because 4971923965 - 2¹⁷ = 4971792893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497192392 + ... + 497192401.

It is an arithmetic number, because the mean of its divisors is an integer number (1491577191).

Almost surely, 2^4971923965 is an apocalyptic number.

It is an amenable number.

4971923965 is a deficient number, since it is larger than the sum of its proper divisors (994384799).

4971923965 is an equidigital number, since it uses as much as digits as its factorization.

4971923965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994384798.

The product of its digits is 3674160, while the sum is 55.

The square root of 4971923965 is about 70511.8710927458. The cubic root of 4971923965 is about 1706.7693142293.

The spelling of 4971923965 in words is "four billion, nine hundred seventy-one million, nine hundred twenty-three thousand, nine hundred sixty-five".