138343354 has 4 divisors (see below), whose sum is σ = 207515034. Its totient is φ = 69171676.

The previous prime is 138343349. The next prime is 138343363. The reversal of 138343354 is 453343831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 453343831 = 3511 ⋅129121.

It can be written as a sum of positive squares in only one way, i.e., 117137329 + 21206025 = 10823^2 + 4605^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34585837 + ... + 34585840.

Almost surely, 2^138343354 is an apocalyptic number.

138343354 is a deficient number, since it is larger than the sum of its proper divisors (69171680).

138343354 is an equidigital number, since it uses as much as digits as its factorization.

138343354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69171679.

The product of its digits is 51840, while the sum is 34.

The square root of 138343354 is about 11761.9451622595. The cubic root of 138343354 is about 517.1931531387.

The spelling of 138343354 in words is "one hundred thirty-eight million, three hundred forty-three thousand, three hundred fifty-four".