1987164216 has 96 divisors (see below), whose sum is σ = 5596905600. Its totient is φ = 636168960.

The previous prime is 1987164211. The next prime is 1987164247. The reversal of 1987164216 is 6124617891.

1987164216 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987164211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408921 + ... + 413751.

It is an arithmetic number, because the mean of its divisors is an integer number (58301100).

Almost surely, 2^1987164216 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 1987164216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798452800).

1987164216 is an abundant number, since it is smaller than the sum of its proper divisors (3609741384).

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

1987164216 is a wasteful number, since it uses less digits than its factorization.

1987164216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069 (or 5062 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1987164216 is about 44577.6201249012. The cubic root of 1987164216 is about 1257.2199173591.

The spelling of 1987164216 in words is "one billion, nine hundred eighty-seven million, one hundred sixty-four thousand, two hundred sixteen".