1808542259040 has 288 divisors, whose sum is σ = 6294374781408. Its totient is φ = 436160102400.

The previous prime is 1808542259033. The next prime is 1808542259057. The reversal of 1808542259040 is 409522458081.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 11128770 + ... + 11290110.

It is an arithmetic number, because the mean of its divisors is an integer number (21855467991).

Almost surely, 2^{1808542259040} is an apocalyptic number.

1808542259040 is a gapful number since it is divisible by the number (10) 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 1808542259040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3147187390704).

1808542259040 is an abundant number, since it is smaller than the sum of its proper divisors (4485832522368).

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

1808542259040 is a wasteful number, since it uses less digits than its factorization.

1808542259040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161574 (or 161555 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 1808542259040 in words is "one trillion, eight hundred eight billion, five hundred forty-two million, two hundred fifty-nine thousand, forty".