513874769 has 4 divisors (see below), whose sum is σ = 518962740. Its totient is φ = 508786800.

The previous prime is 513874721. The next prime is 513874843. The reversal of 513874769 is 967478315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227859025 + 286015744 = 15095^2 + 16912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513874769 is a prime.

It is a super-2 number, since 2×513874769² = 528134556429606722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513874709) 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, 2543834 + ... + 2544035.

It is an arithmetic number, because the mean of its divisors is an integer number (129740685).

Almost surely, 2^513874769 is an apocalyptic number.

It is an amenable number.

513874769 is a deficient number, since it is larger than the sum of its proper divisors (5087971).

513874769 is a wasteful number, since it uses less digits than its factorization.

513874769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087970.

The product of its digits is 1270080, while the sum is 50.

The square root of 513874769 is about 22668.8060779566. The cubic root of 513874769 is about 800.9752528068.

The spelling of 513874769 in words is "five hundred thirteen million, eight hundred seventy-four thousand, seven hundred sixty-nine".