4191968464 has 20 divisors (see below), whose sum is σ = 8123504740. Its totient is φ = 2095580160.

The previous prime is 4191968449. The next prime is 4191968471. The reversal of 4191968464 is 4648691914.

It can be written as a sum of positive squares in 2 ways, for example, as 1655838864 + 2536129600 = 40692^2 + 50360^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71584 + ... + 116224.

It is an arithmetic number, because the mean of its divisors is an integer number (406175237).

Almost surely, 2^4191968464 is an apocalyptic number.

It is an amenable number.

4191968464 is a deficient number, since it is larger than the sum of its proper divisors (3931536276).

4191968464 is a wasteful number, since it uses less digits than its factorization.

4191968464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50518 (or 50512 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 4191968464 is about 64745.4126869232. The cubic root of 4191968464 is about 1612.3995524554.

The spelling of 4191968464 in words is "four billion, one hundred ninety-one million, nine hundred sixty-eight thousand, four hundred sixty-four".