4361091840 has 432 divisors, whose sum is σ = 17892096768. Its totient is φ = 996323328.

The previous prime is 4361091817. The next prime is 4361091851. The reversal of 4361091840 is 481901634.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4361091795 and 4361091804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2176279 + ... + 2178281.

Almost surely, 2^4361091840 is an apocalyptic number.

4361091840 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 4361091840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8946048384).

4361091840 is an abundant number, since it is smaller than the sum of its proper divisors (13531004928).

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

4361091840 is an equidigital number, since it uses as much as digits as its factorization.

4361091840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 2020 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 4361091840 is about 66038.5632793446. The cubic root of 4361091840 is about 1633.7981909771.

The spelling of 4361091840 in words is "four billion, three hundred sixty-one million, ninety-one thousand, eight hundred forty".