520373893 has 8 divisors (see below), whose sum is σ = 593367768. Its totient is φ = 452089344.

The previous prime is 520373807. The next prime is 520373911. The reversal of 520373893 is 398373025.

It can be written as a sum of positive squares in 4 ways, for example, as 5673924 + 514699969 = 2382^2 + 22687^2 .

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 520373893 - 2¹³ = 520365701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520373803) 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, 1177096 + ... + 1177537.

It is an arithmetic number, because the mean of its divisors is an integer number (74170971).

Almost surely, 2^520373893 is an apocalyptic number.

It is an amenable number.

520373893 is a deficient number, since it is larger than the sum of its proper divisors (72993875).

520373893 is a wasteful number, since it uses less digits than its factorization.

520373893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354663.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 520373893 is about 22811.7051751946. The cubic root of 520373893 is about 804.3378390321.

The spelling of 520373893 in words is "five hundred twenty million, three hundred seventy-three thousand, eight hundred ninety-three".