502193138 has 8 divisors (see below), whose sum is σ = 753385260. Its totient is φ = 251064720.

The previous prime is 502193137. The next prime is 502193171. The reversal of 502193138 is 831391205.

It can be written as a sum of positive squares in 2 ways, for example, as 302168689 + 200024449 = 17383^2 + 14143^2 .

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 (502193137) 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, 19928 + ... + 37436.

Almost surely, 2^502193138 is an apocalyptic number.

502193138 is a deficient number, since it is larger than the sum of its proper divisors (251192122).

502193138 is a wasteful number, since it uses less digits than its factorization.

502193138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31852.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 502193138 is about 22409.6661733280. Note that the first 3 decimals coincide. The cubic root of 502193138 is about 794.8592965921.

The spelling of 502193138 in words is "five hundred two million, one hundred ninety-three thousand, one hundred thirty-eight".