513800923 has 8 divisors (see below), whose sum is σ = 516312576. Its totient is φ = 511295400.

The previous prime is 513800909. The next prime is 513800927. The reversal of 513800923 is 329008315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513800923 - 2¹³ = 513792731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513800927) 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, 273678 + ... + 275548.

It is an arithmetic number, because the mean of its divisors is an integer number (64539072).

Almost surely, 2^513800923 is an apocalyptic number.

513800923 is a deficient number, since it is larger than the sum of its proper divisors (2511653).

513800923 is a wasteful number, since it uses less digits than its factorization.

513800923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 513800923 is about 22667.1772172893. The cubic root of 513800923 is about 800.9368831134.

The spelling of 513800923 in words is "five hundred thirteen million, eight hundred thousand, nine hundred twenty-three".