1987937105 has 64 divisors (see below), whose sum is σ = 3057868800. Its totient is φ = 1229860800.

The previous prime is 1987937087. The next prime is 1987937131. The reversal of 1987937105 is 5017397891.

It is not a de Polignac number, because 1987937105 - 2⁸ = 1987936849 is a prime.

It is a Curzon number.

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 63 ways as a sum of consecutive naturals, for example, 3150140 + ... + 3150770.

It is an arithmetic number, because the mean of its divisors is an integer number (47779200).

Almost surely, 2^1987937105 is an apocalyptic number.

It is an amenable number.

1987937105 is a deficient number, since it is larger than the sum of its proper divisors (1069931695).

1987937105 is a wasteful number, since it uses less digits than its factorization.

1987937105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 50.

The square root of 1987937105 is about 44586.2883070569. The cubic root of 1987937105 is about 1257.3828908881.

The spelling of 1987937105 in words is "one billion, nine hundred eighty-seven million, nine hundred thirty-seven thousand, one hundred five".