520163386 has 4 divisors (see below), whose sum is σ = 780245082. Its totient is φ = 260081692.

The previous prime is 520163383. The next prime is 520163387. The reversal of 520163386 is 683361025.

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

It can be written as a sum of positive squares in only one way, i.e., 407272761 + 112890625 = 20181^2 + 10625^2 .

It is not an unprimeable number, because it can be changed into a prime (520163383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130040845 + ... + 130040848.

Almost surely, 2^520163386 is an apocalyptic number.

520163386 is a deficient number, since it is larger than the sum of its proper divisors (260081696).

520163386 is a wasteful number, since it uses less digits than its factorization.

520163386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260081695.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 520163386 is about 22807.0906956587. The cubic root of 520163386 is about 804.2293647316.

The spelling of 520163386 in words is "five hundred twenty million, one hundred sixty-three thousand, three hundred eighty-six".