1987937122 has 8 divisors (see below), whose sum is σ = 2983441500. Its totient is φ = 993456624.

The previous prime is 1987937087. The next prime is 1987937131. The reversal of 1987937122 is 2217397891.

It can be written as a sum of positive squares in 2 ways, for example, as 1942253041 + 45684081 = 44071^2 + 6759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251097 + ... + 258892.

Almost surely, 2^1987937122 is an apocalyptic number.

1987937122 is a deficient number, since it is larger than the sum of its proper divisors (995504378).

1987937122 is a wasteful number, since it uses less digits than its factorization.

1987937122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511940.

The product of its digits is 381024, while the sum is 49.

The square root of 1987937122 is about 44586.2884976985. The cubic root of 1987937122 is about 1257.3828944724.

The spelling of 1987937122 in words is "one billion, nine hundred eighty-seven million, nine hundred thirty-seven thousand, one hundred twenty-two".