513161860 has 12 divisors (see below), whose sum is σ = 1077639948. Its totient is φ = 205264736.

The previous prime is 513161851. The next prime is 513161867. The reversal of 513161860 is 68161315.

It can be written as a sum of positive squares in 2 ways, for example, as 297424516 + 215737344 = 17246^2 + 14688^2 .

It is not an unprimeable number, because it can be changed into a prime (513161867) 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, 12829027 + ... + 12829066.

It is an arithmetic number, because the mean of its divisors is an integer number (89803329).

Almost surely, 2^513161860 is an apocalyptic number.

It is an amenable number.

513161860 is an abundant number, since it is smaller than the sum of its proper divisors (564478088).

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

513161860 is a wasteful number, since it uses less digits than its factorization.

513161860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25658102 (or 25658100 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 513161860 is about 22653.0761707985. The cubic root of 513161860 is about 800.6046782568.

The spelling of 513161860 in words is "five hundred thirteen million, one hundred sixty-one thousand, eight hundred sixty".