4381018590546 has 160 divisors (see below), whose sum is σ = 10618616205120. Its totient is φ = 1342052654976.

The previous prime is 4381018590503. The next prime is 4381018590577. The reversal of 4381018590546 is 6450958101834.

It is a happy number.

4381018590546 is a `hidden beast` number, since 4 + 3 + 8 + 1 + 0 + 1 + 8 + 5 + 90 + 546 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 4381018590492 and 4381018590501.

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, 865982565 + ... + 865987623.

It is an arithmetic number, because the mean of its divisors is an integer number (66366351282).

Almost surely, 2^{4381018590546} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4381018590546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5309308102560).

4381018590546 is an abundant number, since it is smaller than the sum of its proper divisors (6237597614574).

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

4381018590546 is a wasteful number, since it uses less digits than its factorization.

4381018590546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6822 (or 6813 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 4381018590546 in words is "four trillion, three hundred eighty-one billion, eighteen million, five hundred ninety thousand, five hundred forty-six".