513212718 has 16 divisors (see below), whose sum is σ = 1054167120. Its totient is φ = 166447296.

The previous prime is 513212717. The next prime is 513212737. The reversal of 513212718 is 817212315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513212717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155663 + ... + 1156106.

It is an arithmetic number, because the mean of its divisors is an integer number (65885445).

Almost surely, 2^513212718 is an apocalyptic number.

513212718 is an abundant number, since it is smaller than the sum of its proper divisors (540954402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513212718 is a wasteful number, since it uses less digits than its factorization.

513212718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311811.

The product of its digits is 3360, while the sum is 30.

The square root of 513212718 is about 22654.1986836878. The cubic root of 513212718 is about 800.6311259275.

The spelling of 513212718 in words is "five hundred thirteen million, two hundred twelve thousand, seven hundred eighteen".