345982138 has 8 divisors (see below), whose sum is σ = 520993332. Its totient is φ = 172317696.

The previous prime is 345982069. The next prime is 345982139. The reversal of 345982138 is 831289543.

It can be written as a sum of positive squares in 2 ways, for example, as 343249729 + 2732409 = 18527^2 + 1653^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 345982094 and 345982103.

It is not an unprimeable number, because it can be changed into a prime (345982139) 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, 336045 + ... + 337072.

Almost surely, 2^345982138 is an apocalyptic number.

345982138 is a deficient number, since it is larger than the sum of its proper divisors (175011194).

345982138 is a wasteful number, since it uses less digits than its factorization.

345982138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673376.

The product of its digits is 207360, while the sum is 43.

The square root of 345982138 is about 18600.5950980069. The cubic root of 345982138 is about 702.0228142790.

The spelling of 345982138 in words is "three hundred forty-five million, nine hundred eighty-two thousand, one hundred thirty-eight".