513871478 has 12 divisors (see below), whose sum is σ = 818816892. Its totient is φ = 241821600.

The previous prime is 513871399. The next prime is 513871487. The reversal of 513871478 is 874178315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 443948 + ... + 445103.

It is an arithmetic number, because the mean of its divisors is an integer number (68234741).

Almost surely, 2^513871478 is an apocalyptic number.

513871478 is a deficient number, since it is larger than the sum of its proper divisors (304945414).

513871478 is a wasteful number, since it uses less digits than its factorization.

513871478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889087 (or 889070 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 513871478 is about 22668.7334891034. The cubic root of 513871478 is about 800.9735429122.

The spelling of 513871478 in words is "five hundred thirteen million, eight hundred seventy-one thousand, four hundred seventy-eight".