2757681988 has 6 divisors (see below), whose sum is σ = 4825943486. Its totient is φ = 1378840992.

The previous prime is 2757681931. The next prime is 2757682009. The reversal of 2757681988 is 8891867572.

It can be written as a sum of positive squares in only one way, i.e., 1693487104 + 1064194884 = 41152^2 + 32622^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344710245 + ... + 344710252.

Almost surely, 2^2757681988 is an apocalyptic number.

It is an amenable number.

2757681988 is a deficient number, since it is larger than the sum of its proper divisors (2068261498).

2757681988 is a wasteful number, since it uses less digits than its factorization.

2757681988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689420501 (or 689420499 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 61.

The square root of 2757681988 is about 52513.6362100360. The cubic root of 2757681988 is about 1402.3230120149.

The spelling of 2757681988 in words is "two billion, seven hundred fifty-seven million, six hundred eighty-one thousand, nine hundred eighty-eight".