4891616478 has 48 divisors (see below), whose sum is σ = 12117636960. Its totient is φ = 1397020608.

The previous prime is 4891616453. The next prime is 4891616491. The reversal of 4891616478 is 8746161984.

4891616478 is a `hidden beast` number, since 4 + 8 + 9 + 161 + 6 + 478 = 666.

It is a super-2 number, since 2×4891616478² = 47855823535682248968, 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 23 ways as a sum of consecutive naturals, for example, 360888 + ... + 374196.

It is an arithmetic number, because the mean of its divisors is an integer number (252450770).

Almost surely, 2^4891616478 is an apocalyptic number.

4891616478 is an abundant number, since it is smaller than the sum of its proper divisors (7226020482).

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

4891616478 is a wasteful number, since it uses less digits than its factorization.

4891616478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16241 (or 16238 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 4891616478 is about 69940.0920645662. The cubic root of 4891616478 is about 1697.5300322134.

The spelling of 4891616478 in words is "four billion, eight hundred ninety-one million, six hundred sixteen thousand, four hundred seventy-eight".