1986572484 has 72 divisors (see below), whose sum is σ = 5416599552. Its totient is φ = 610269120.

The previous prime is 1986572461. The next prime is 1986572503. The reversal of 1986572484 is 4842756891.

It is a happy number.

1986572484 is a `hidden beast` number, since 1 + 98 + 6 + 5 + 72 + 484 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1986572484.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320317 + ... + 326459.

Almost surely, 2^1986572484 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 1986572484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2708299776).

1986572484 is an abundant number, since it is smaller than the sum of its proper divisors (3430027068).

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

1986572484 is a wasteful number, since it uses less digits than its factorization.

1986572484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857 (or 6852 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 1986572484 is about 44570.9825334825. The cubic root of 1986572484 is about 1257.0951145363.

The spelling of 1986572484 in words is "one billion, nine hundred eighty-six million, five hundred seventy-two thousand, four hundred eighty-four".