2381581418920 has 64 divisors (see below), whose sum is σ = 5853610929600. Its totient is φ = 864857594880.

The previous prime is 2381581418869. The next prime is 2381581418933. The reversal of 2381581418920 is 298141851832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3337009 + ... + 3987328.

It is an arithmetic number, because the mean of its divisors is an integer number (91462670775).

Almost surely, 2^{2381581418920} is an apocalyptic number.

2381581418920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2381581418920 is an abundant number, since it is smaller than the sum of its proper divisors (3472029510680).

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

2381581418920 is a wasteful number, since it uses less digits than its factorization.

2381581418920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325098 (or 7325094 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 2381581418920 in words is "two trillion, three hundred eighty-one billion, five hundred eighty-one million, four hundred eighteen thousand, nine hundred twenty".