1987289380962 has 40 divisors (see below), whose sum is σ = 4526000306652. Its totient is φ = 651570285600.

The previous prime is 1987289380949. The next prime is 1987289380981. The reversal of 1987289380962 is 2690839827891.

1987289380962 is a `hidden beast` number, since 1 + 9 + 87 + 2 + 89 + 380 + 96 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1464460602201 + 522828778761 = 1210149^2 + 723069^2 .

It is a super-3 number, since 3×1987289380962³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 100541089 + ... + 100560852.

Almost surely, 2^{1987289380962} is an apocalyptic number.

1987289380962 is an abundant number, since it is smaller than the sum of its proper divisors (2538710925690).

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

1987289380962 is a wasteful number, since it uses less digits than its factorization.

1987289380962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201102016 (or 201102007 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 72.

The spelling of 1987289380962 in words is "one trillion, nine hundred eighty-seven billion, two hundred eighty-nine million, three hundred eighty thousand, nine hundred sixty-two".