4685091840 has 880 divisors, whose sum is σ = 19973479680. Its totient is φ = 1035141120.

The previous prime is 4685091833. The next prime is 4685091857. The reversal of 4685091840 is 481905864.

4685091840 is a `hidden beast` number, since 4 + 68 + 509 + 1 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (880).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 59304921 + ... + 59304999.

It is an arithmetic number, because the mean of its divisors is an integer number (22697136).

Almost surely, 2^4685091840 is an apocalyptic number.

4685091840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4685091840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9986739840).

4685091840 is an abundant number, since it is smaller than the sum of its proper divisors (15288387840).

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

4685091840 is a wasteful number, since it uses less digits than its factorization.

4685091840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 4685091840 is about 68447.7307147578. The cubic root of 4685091840 is about 1673.2957302633.

The spelling of 4685091840 in words is "four billion, six hundred eighty-five million, ninety-one thousand, eight hundred forty".