1887664050 has 144 divisors (see below), whose sum is σ = 5319445248. Its totient is φ = 479001600.

The previous prime is 1887664033. The next prime is 1887664091. The reversal of 1887664050 is 504667881.

It is a happy number.

1887664050 is a `hidden beast` number, since 188 + 7 + 66 + 405 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1887663987 and 1887664005.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2804514 + ... + 2805186.

It is an arithmetic number, because the mean of its divisors is an integer number (36940592).

Almost surely, 2^1887664050 is an apocalyptic number.

1887664050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1887664050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2659722624).

1887664050 is an abundant number, since it is smaller than the sum of its proper divisors (3431781198).

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

1887664050 is a wasteful number, since it uses less digits than its factorization.

1887664050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 1887664050 is about 43447.2559547781. The cubic root of 1887664050 is about 1235.8760087076.

The spelling of 1887664050 in words is "one billion, eight hundred eighty-seven million, six hundred sixty-four thousand, fifty".