1871448480 has 144 divisors (see below), whose sum is σ = 6966951264. Its totient is φ = 453680640.

The previous prime is 1871448461. The next prime is 1871448487. The reversal of 1871448480 is 848441781.

It is a happy number.

1871448480 is a `hidden beast` number, since 1 + 87 + 14 + 484 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1871448487) 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 23 ways as a sum of consecutive naturals, for example, 43234 + ... + 74913.

It is an arithmetic number, because the mean of its divisors is an integer number (48381606).

Almost surely, 2^1871448480 is an apocalyptic number.

1871448480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1871448480 is an abundant number, since it is smaller than the sum of its proper divisors (5095502784).

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

1871448480 is a wasteful number, since it uses less digits than its factorization.

1871448480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118179 (or 118168 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 1871448480 is about 43260.2413308109. The cubic root of 1871448480 is about 1232.3269849451.

The spelling of 1871448480 in words is "one billion, eight hundred seventy-one million, four hundred forty-eight thousand, four hundred eighty".