511478990 has 16 divisors (see below), whose sum is σ = 1004358960. Its totient is φ = 185992320.

The previous prime is 511478941. The next prime is 511479029. The reversal of 511478990 is 99874115.

It is a super-2 number, since 2×511478990² = 523221514422840200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2324795 + ... + 2325014.

It is an arithmetic number, because the mean of its divisors is an integer number (62772435).

Almost surely, 2^511478990 is an apocalyptic number.

511478990 is a deficient number, since it is larger than the sum of its proper divisors (492879970).

511478990 is a wasteful number, since it uses less digits than its factorization.

511478990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649827.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 511478990 is about 22615.9012643759. The cubic root of 511478990 is about 799.7285485280.

The spelling of 511478990 in words is "five hundred eleven million, four hundred seventy-eight thousand, nine hundred ninety".