1881682542 has 32 divisors (see below), whose sum is σ = 4231906560. Its totient is φ = 619669080.

The previous prime is 1881682511. The next prime is 1881682549. The reversal of 1881682542 is 2452861881.

1881682542 is a `hidden beast` number, since 18 + 8 + 16 + 82 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881682549) by changing a digit.

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, 205434 + ... + 214397.

It is an arithmetic number, because the mean of its divisors is an integer number (132247080).

Almost surely, 2^1881682542 is an apocalyptic number.

1881682542 is an abundant number, since it is smaller than the sum of its proper divisors (2350224018).

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

1881682542 is a wasteful number, since it uses less digits than its factorization.

1881682542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419925 (or 419919 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 1881682542 is about 43378.3649069441. The cubic root of 1881682542 is about 1234.5692394237.

The spelling of 1881682542 in words is "one billion, eight hundred eighty-one million, six hundred eighty-two thousand, five hundred forty-two".