1987366104 has 320 divisors, whose sum is σ = 6244761600. Its totient is φ = 587865600.

The previous prime is 1987366103. The next prime is 1987366111. The reversal of 1987366104 is 4016637891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1987366104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987366103) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 15648489 + ... + 15648615.

It is an arithmetic number, because the mean of its divisors is an integer number (19514880).

Almost surely, 2^1987366104 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 1987366104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3122380800).

1987366104 is an abundant number, since it is smaller than the sum of its proper divisors (4257395496).

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

1987366104 is a wasteful number, since it uses less digits than its factorization.

1987366104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1987366104 is about 44579.8845220577. The cubic root of 1987366104 is about 1257.2624921025.

The spelling of 1987366104 in words is "one billion, nine hundred eighty-seven million, three hundred sixty-six thousand, one hundred four".