1987886124 has 120 divisors (see below), whose sum is σ = 6099890720. Its totient is φ = 552593664.

The previous prime is 1987886123. The next prime is 1987886137. The reversal of 1987886124 is 4216887891.

1987886124 is a `hidden beast` number, since 19 + 8 + 7 + 8 + 8 + 612 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1987886123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 72072 + ... + 95760.

Almost surely, 2^1987886124 is an apocalyptic number.

1987886124 is a gapful number since it is divisible by the number (14) 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 1987886124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3049945360).

1987886124 is an abundant number, since it is smaller than the sum of its proper divisors (4112004596).

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

1987886124 is a wasteful number, since it uses less digits than its factorization.

1987886124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23749 (or 23738 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 1987886124 is about 44585.7165917517. The cubic root of 1987886124 is about 1257.3721421938.

The spelling of 1987886124 in words is "one billion, nine hundred eighty-seven million, eight hundred eighty-six thousand, one hundred twenty-four".