1871888872 has 64 divisors (see below), whose sum is σ = 4199178240. Its totient is φ = 765374400.

The previous prime is 1871888827. The next prime is 1871888899. The reversal of 1871888872 is 2788881781.

It is a nude number because it is divisible by every one of its digits.

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, 115663 + ... + 130849.

It is an arithmetic number, because the mean of its divisors is an integer number (65612160).

Almost surely, 2^1871888872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1871888872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2099589120).

1871888872 is an abundant number, since it is smaller than the sum of its proper divisors (2327289368).

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

1871888872 is a wasteful number, since it uses less digits than its factorization.

1871888872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15302 (or 15298 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 58.

The square root of 1871888872 is about 43265.3310631041. The cubic root of 1871888872 is about 1232.4236416946.

The spelling of 1871888872 in words is "one billion, eight hundred seventy-one million, eight hundred eighty-eight thousand, eight hundred seventy-two".