1988485236 has 36 divisors (see below), whose sum is σ = 5028748452. Its totient is φ = 662525184.

The previous prime is 1988485229. The next prime is 1988485241. The reversal of 1988485236 is 6325848891.

It can be written as a sum of positive squares in 2 ways, for example, as 1251036900 + 737448336 = 35370^2 + 27156^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75586 + ... + 98438.

It is an arithmetic number, because the mean of its divisors is an integer number (139687457).

Almost surely, 2^1988485236 is an apocalyptic number.

It is an amenable number.

1988485236 is an abundant number, since it is smaller than the sum of its proper divisors (3040263216).

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

1988485236 is a wasteful number, since it uses less digits than its factorization.

1988485236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25280 (or 25275 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 1988485236 is about 44592.4347395385. The cubic root of 1988485236 is about 1257.4984457187.

The spelling of 1988485236 in words is "one billion, nine hundred eighty-eight million, four hundred eighty-five thousand, two hundred thirty-six".