512319138 has 8 divisors (see below), whose sum is σ = 1024638288. Its totient is φ = 170773044.

The previous prime is 512319127. The next prime is 512319139. The reversal of 512319138 is 831913215.

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

512319138 is an admirable number.

It is a super-2 number, since 2×512319138² = 524941798322126088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 512319099 and 512319108.

It is not an unprimeable number, because it can be changed into a prime (512319139) 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, 42693256 + ... + 42693267.

It is an arithmetic number, because the mean of its divisors is an integer number (128079786).

Almost surely, 2^512319138 is an apocalyptic number.

512319138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

512319138 is a wasteful number, since it uses less digits than its factorization.

512319138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85386528.

The product of its digits is 6480, while the sum is 33.

The square root of 512319138 is about 22634.4679195249. The cubic root of 512319138 is about 800.1661831849.

The spelling of 512319138 in words is "five hundred twelve million, three hundred nineteen thousand, one hundred thirty-eight".