513873465 has 32 divisors (see below), whose sum is σ = 941172480. Its totient is φ = 234534144.

The previous prime is 513873463. The next prime is 513873497. The reversal of 513873465 is 564378315.

It is not a de Polignac number, because 513873465 - 2¹ = 513873463 is a prime.

It is a super-2 number, since 2×513873465² = 528131876062212450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513873463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67471 + ... + 74699.

It is an arithmetic number, because the mean of its divisors is an integer number (29411640).

Almost surely, 2^513873465 is an apocalyptic number.

It is an amenable number.

513873465 is a deficient number, since it is larger than the sum of its proper divisors (427299015).

513873465 is a wasteful number, since it uses less digits than its factorization.

513873465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921.

The product of its digits is 302400, while the sum is 42.

The square root of 513873465 is about 22668.7773159471. Note that the first 3 decimals coincide. The cubic root of 513873465 is about 800.9745752925.

The spelling of 513873465 in words is "five hundred thirteen million, eight hundred seventy-three thousand, four hundred sixty-five".