513898964 has 6 divisors (see below), whose sum is σ = 899323194. Its totient is φ = 256949480.

The previous prime is 513898963. The next prime is 513898969. The reversal of 513898964 is 469898315.

It can be written as a sum of positive squares in only one way, i.e., 505890064 + 8008900 = 22492^2 + 2830^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513898963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64237367 + ... + 64237374.

It is an arithmetic number, because the mean of its divisors is an integer number (149887199).

Almost surely, 2^513898964 is an apocalyptic number.

It is an amenable number.

513898964 is a deficient number, since it is larger than the sum of its proper divisors (385424230).

513898964 is a wasteful number, since it uses less digits than its factorization.

513898964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128474745 (or 128474743 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 513898964 is about 22669.3397345401. The cubic root of 513898964 is about 800.9878235039.

The spelling of 513898964 in words is "five hundred thirteen million, eight hundred ninety-eight thousand, nine hundred sixty-four".