513640016 has 20 divisors (see below), whose sum is σ = 995894592. Its totient is φ = 256634976.

The previous prime is 513640003. The next prime is 513640019. The reversal of 513640016 is 610046315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513640019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12905 + ... + 34551.

Almost surely, 2^513640016 is an apocalyptic number.

It is an amenable number.

513640016 is a deficient number, since it is larger than the sum of its proper divisors (482254576).

513640016 is a wasteful number, since it uses less digits than its factorization.

513640016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23138 (or 23132 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 513640016 is about 22663.6276001879. The cubic root of 513640016 is about 800.8532646008.

The spelling of 513640016 in words is "five hundred thirteen million, six hundred forty thousand, sixteen".