20381543182 has 32 divisors (see below), whose sum is σ = 41048146944. Its totient is φ = 7330024800.

The previous prime is 20381543177. The next prime is 20381543197. The reversal of 20381543182 is 28134518302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5088294 + ... + 5092297.

It is an arithmetic number, because the mean of its divisors is an integer number (1282754592).

Almost surely, 2^20381543182 is an apocalyptic number.

20381543182 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20381543182 is an abundant number, since it is smaller than the sum of its proper divisors (20666603762).

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

20381543182 is a wasteful number, since it uses less digits than its factorization.

20381543182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180624.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 20381543182 in words is "twenty billion, three hundred eighty-one million, five hundred forty-three thousand, one hundred eighty-two".