1871804416 has 48 divisors (see below), whose sum is σ = 3750757920. Its totient is φ = 933888000.

The previous prime is 1871804387. The next prime is 1871804419. The reversal of 1871804416 is 6144081781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871804419) 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 3 ways as a sum of consecutive naturals, for example, 1537440 + ... + 1538656.

It is an arithmetic number, because the mean of its divisors is an integer number (78140790).

Almost surely, 2^1871804416 is an apocalyptic number.

1871804416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1871804416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875378960).

1871804416 is an abundant number, since it is smaller than the sum of its proper divisors (1878953504).

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

1871804416 is an equidigital number, since it uses as much as digits as its factorization.

1871804416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 1871804416 is about 43264.3550281291. The cubic root of 1871804416 is about 1232.4051065600.

The spelling of 1871804416 in words is "one billion, eight hundred seventy-one million, eight hundred four thousand, four hundred sixteen".