511985416 has 8 divisors (see below), whose sum is σ = 959972670. Its totient is φ = 255992704.

The previous prime is 511985407. The next prime is 511985449. The reversal of 511985416 is 614589115.

It can be written as a sum of positive squares in only one way, i.e., 320052100 + 191933316 = 17890^2 + 13854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31999081 + ... + 31999096.

Almost surely, 2^511985416 is an apocalyptic number.

It is an amenable number.

511985416 is a deficient number, since it is larger than the sum of its proper divisors (447987254).

511985416 is a wasteful number, since it uses less digits than its factorization.

511985416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63998183 (or 63998179 counting only the distinct ones).

The product of its digits is 43200, while the sum is 40.

The square root of 511985416 is about 22627.0947317591. The cubic root of 511985416 is about 799.9924040945.

The spelling of 511985416 in words is "five hundred eleven million, nine hundred eighty-five thousand, four hundred sixteen".