1987828676 has 6 divisors (see below), whose sum is σ = 3478700190. Its totient is φ = 993914336.

The previous prime is 1987828673. The next prime is 1987828681. The reversal of 1987828676 is 6768287891.

It can be written as a sum of positive squares in only one way, i.e., 1496142400 + 491686276 = 38680^2 + 22174^2 .

It is not an unprimeable number, because it can be changed into a prime (1987828673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248478581 + ... + 248478588.

It is an arithmetic number, because the mean of its divisors is an integer number (579783365).

Almost surely, 2^1987828676 is an apocalyptic number.

It is an amenable number.

1987828676 is a deficient number, since it is larger than the sum of its proper divisors (1490871514).

1987828676 is a wasteful number, since it uses less digits than its factorization.

1987828676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496957173 (or 496957171 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 62.

The square root of 1987828676 is about 44585.0723449004. The cubic root of 1987828676 is about 1257.3600297946.

The spelling of 1987828676 in words is "one billion, nine hundred eighty-seven million, eight hundred twenty-eight thousand, six hundred seventy-six".