1871874508420 has 72 divisors (see below), whose sum is σ = 4573998386496. Its totient is φ = 641606406336.

The previous prime is 1871874508363. The next prime is 1871874508421. The reversal of 1871874508420 is 248054781781.

It is not an unprimeable number, because it can be changed into a prime (1871874508421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3270087 + ... + 3799633.

It is an arithmetic number, because the mean of its divisors is an integer number (63527755368).

Almost surely, 2^{1871874508420} is an apocalyptic number.

1871874508420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1871874508420 is an abundant number, since it is smaller than the sum of its proper divisors (2702123878076).

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

1871874508420 is a wasteful number, since it uses less digits than its factorization.

1871874508420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533177 (or 533168 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 55.

The spelling of 1871874508420 in words is "one trillion, eight hundred seventy-one billion, eight hundred seventy-four million, five hundred eight thousand, four hundred twenty".