4811991408 has 80 divisors (see below), whose sum is σ = 15785378560. Its totient is φ = 1374853824.

The previous prime is 4811991397. The next prime is 4811991449. The reversal of 4811991408 is 8041991184.

4811991408 is a `hidden beast` number, since 48 + 119 + 91 + 408 = 666.

It is a super-2 number, since 2×4811991408² = 46310522621331644928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792610 + ... + 798657.

It is an arithmetic number, because the mean of its divisors is an integer number (197317232).

Almost surely, 2^4811991408 is an apocalyptic number.

4811991408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4811991408 is an abundant number, since it is smaller than the sum of its proper divisors (10973387152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4811991408 is a wasteful number, since it uses less digits than its factorization.

4811991408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591291 (or 1591279 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 4811991408 is about 69368.5188540162. The cubic root of 4811991408 is about 1688.2688770795.

The spelling of 4811991408 in words is "four billion, eight hundred eleven million, nine hundred ninety-one thousand, four hundred eight".