523145018 has 8 divisors (see below), whose sum is σ = 856055520. Its totient is φ = 237793180.

The previous prime is 523145017. The next prime is 523145023. The reversal of 523145018 is 810541325.

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

It is not an unprimeable number, because it can be changed into a prime (523145017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11889638 + ... + 11889681.

It is an arithmetic number, because the mean of its divisors is an integer number (107006940).

Almost surely, 2^523145018 is an apocalyptic number.

523145018 is a deficient number, since it is larger than the sum of its proper divisors (332910502).

523145018 is a wasteful number, since it uses less digits than its factorization.

523145018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23779332.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 523145018 is about 22872.3636294984. The cubic root of 523145018 is about 805.7630808069.

It can be divided in two parts, 523 and 145018, that added together give a palindrome (145541).

The spelling of 523145018 in words is "five hundred twenty-three million, one hundred forty-five thousand, eighteen".