518912147 has 4 divisors (see below), whose sum is σ = 558828480. Its totient is φ = 478995816.

The previous prime is 518912143. The next prime is 518912179. The reversal of 518912147 is 741219815.

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

It is not a de Polignac number, because 518912147 - 2² = 518912143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518912147.

It is not an unprimeable number, because it can be changed into a prime (518912143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19958147 + ... + 19958172.

It is an arithmetic number, because the mean of its divisors is an integer number (139707120).

Almost surely, 2^518912147 is an apocalyptic number.

518912147 is a deficient number, since it is larger than the sum of its proper divisors (39916333).

518912147 is a wasteful number, since it uses less digits than its factorization.

518912147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39916332.

The product of its digits is 20160, while the sum is 38.

The square root of 518912147 is about 22779.6432588397. The cubic root of 518912147 is about 803.5839962983.

It can be divided in two parts, 51 and 8912147, that added together give a palindrome (8912198).

The spelling of 518912147 in words is "five hundred eighteen million, nine hundred twelve thousand, one hundred forty-seven".