138430346 has 4 divisors (see below), whose sum is σ = 207645522. Its totient is φ = 69215172.

The previous prime is 138430321. The next prime is 138430351. The reversal of 138430346 is 643034831.

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

It can be written as a sum of positive squares in only one way, i.e., 85359121 + 53071225 = 9239^2 + 7285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34607585 + ... + 34607588.

Almost surely, 2^138430346 is an apocalyptic number.

138430346 is a deficient number, since it is larger than the sum of its proper divisors (69215176).

138430346 is an equidigital number, since it uses as much as digits as its factorization.

138430346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69215175.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 138430346 is about 11765.6426088846. The cubic root of 138430346 is about 517.3015362265.

The spelling of 138430346 in words is "one hundred thirty-eight million, four hundred thirty thousand, three hundred forty-six".