511943982 has 144 divisors (see below), whose sum is σ = 1242683904. Its totient is φ = 140263200.

The previous prime is 511943977. The next prime is 511943983. The reversal of 511943982 is 289349115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511943983) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11905653 + ... + 11905695.

Almost surely, 2^511943982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511943982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621341952).

511943982 is an abundant number, since it is smaller than the sum of its proper divisors (730739922).

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

511943982 is a wasteful number, since it uses less digits than its factorization.

511943982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 113 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 511943982 is about 22626.1791294951. The cubic root of 511943982 is about 799.9708228942.

The spelling of 511943982 in words is "five hundred eleven million, nine hundred forty-three thousand, nine hundred eighty-two".