4591216920 has 64 divisors (see below), whose sum is σ = 13781560320. Its totient is φ = 1223621504.

The previous prime is 4591216909. The next prime is 4591216937. The reversal of 4591216920 is 296121954.

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, 218809 + ... + 238871.

It is an arithmetic number, because the mean of its divisors is an integer number (215336880).

Almost surely, 2^4591216920 is an apocalyptic number.

4591216920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4591216920 is an abundant number, since it is smaller than the sum of its proper divisors (9190343400).

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

4591216920 is a wasteful number, since it uses less digits than its factorization.

4591216920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984 (or 21980 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 4591216920 is about 67758.5191691790. The cubic root of 4591216920 is about 1662.0443337856.

The spelling of 4591216920 in words is "four billion, five hundred ninety-one million, two hundred sixteen thousand, nine hundred twenty".