1982921061 has 8 divisors (see below), whose sum is σ = 2884248864. Its totient is φ = 1201770320.

The previous prime is 1982921051. The next prime is 1982921069. The reversal of 1982921061 is 1601292891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1982921061 - 2¹¹ = 1982919013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982921069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30044226 + ... + 30044291.

It is an arithmetic number, because the mean of its divisors is an integer number (360531108).

Almost surely, 2^1982921061 is an apocalyptic number.

1982921061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1982921061 is a deficient number, since it is larger than the sum of its proper divisors (901327803).

1982921061 is a wasteful number, since it uses less digits than its factorization.

1982921061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60088531.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1982921061 is about 44530.0018077700. The cubic root of 1982921061 is about 1256.3244402115.

The spelling of 1982921061 in words is "one billion, nine hundred eighty-two million, nine hundred twenty-one thousand, sixty-one".