2781986532 has 24 divisors (see below), whose sum is σ = 6990633216. Its totient is φ = 855995808.

The previous prime is 2781986491. The next prime is 2781986533. The reversal of 2781986532 is 2356891872.

It is not an unprimeable number, because it can be changed into a prime (2781986533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8916468 + ... + 8916779.

It is an arithmetic number, because the mean of its divisors is an integer number (291276384).

Almost surely, 2^2781986532 is an apocalyptic number.

It is an amenable number.

2781986532 is an abundant number, since it is smaller than the sum of its proper divisors (4208646684).

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

2781986532 is a wasteful number, since it uses less digits than its factorization.

2781986532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17833267 (or 17833265 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 2781986532 is about 52744.5403051349. The cubic root of 2781986532 is about 1406.4307107303.

The spelling of 2781986532 in words is "two billion, seven hundred eighty-one million, nine hundred eighty-six thousand, five hundred thirty-two".