4671891388 has 24 divisors (see below), whose sum is σ = 8240581440. Its totient is φ = 2317512960.

The previous prime is 4671891373. The next prime is 4671891409. The reversal of 4671891388 is 8831981764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252973 + ... + 270811.

It is an arithmetic number, because the mean of its divisors is an integer number (343357560).

Almost surely, 2^4671891388 is an apocalyptic number.

It is an amenable number.

4671891388 is a deficient number, since it is larger than the sum of its proper divisors (3568690052).

4671891388 is a wasteful number, since it uses less digits than its factorization.

4671891388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18357 (or 18355 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 4671891388 is about 68351.2354533552. The cubic root of 4671891388 is about 1671.7227239319.

The spelling of 4671891388 in words is "four billion, six hundred seventy-one million, eight hundred ninety-one thousand, three hundred eighty-eight".