520148993 has 16 divisors (see below), whose sum is σ = 645085056. Its totient is φ = 408395520.

The previous prime is 520148987. The next prime is 520149029. The reversal of 520148993 is 399841025.

It is not a de Polignac number, because 520148993 - 2⁶ = 520148929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520148993.

It is not an unprimeable number, because it can be changed into a prime (520148093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9896 + ... + 33737.

It is an arithmetic number, because the mean of its divisors is an integer number (40317816).

Almost surely, 2^520148993 is an apocalyptic number.

It is an amenable number.

520148993 is a deficient number, since it is larger than the sum of its proper divisors (124936063).

520148993 is a wasteful number, since it uses less digits than its factorization.

520148993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43784.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 520148993 is about 22806.7751556418. The cubic root of 520148993 is about 804.2219469469.

The spelling of 520148993 in words is "five hundred twenty million, one hundred forty-eight thousand, nine hundred ninety-three".