1982681356 has 6 divisors (see below), whose sum is σ = 3469692380. Its totient is φ = 991340676.

The previous prime is 1982681347. The next prime is 1982681357. The reversal of 1982681356 is 6531862891.

It is not an unprimeable number, because it can be changed into a prime (1982681357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247835166 + ... + 247835173.

Almost surely, 2^1982681356 is an apocalyptic number.

It is an amenable number.

1982681356 is a deficient number, since it is larger than the sum of its proper divisors (1487011024).

1982681356 is a wasteful number, since it uses less digits than its factorization.

1982681356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495670343 (or 495670341 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 1982681356 is about 44527.3102264217. The cubic root of 1982681356 is about 1256.2738146653.

The spelling of 1982681356 in words is "one billion, nine hundred eighty-two million, six hundred eighty-one thousand, three hundred fifty-six".