1881852481540 has 24 divisors (see below), whose sum is σ = 3970619557632. Its totient is φ = 749173498080.

The previous prime is 1881852481519. The next prime is 1881852481601. The reversal of 1881852481540 is 451842581881.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222964084 + ... + 222972523.

It is an arithmetic number, because the mean of its divisors is an integer number (165442481568).

Almost surely, 2^{1881852481540} is an apocalyptic number.

1881852481540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1881852481540 is an abundant number, since it is smaller than the sum of its proper divisors (2088767076092).

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

1881852481540 is a wasteful number, since it uses less digits than its factorization.

1881852481540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445936827 (or 445936825 counting only the distinct ones).

The product of its (nonzero) digits is 3276800, while the sum is 55.

The spelling of 1881852481540 in words is "one trillion, eight hundred eighty-one billion, eight hundred fifty-two million, four hundred eighty-one thousand, five hundred forty".