138330578 has 8 divisors (see below), whose sum is σ = 210418560. Its totient is φ = 68191060.

The previous prime is 138330553. The next prime is 138330589. The reversal of 138330578 is 875033831.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486938 + ... + 487221.

It is an arithmetic number, because the mean of its divisors is an integer number (26302320).

Almost surely, 2^138330578 is an apocalyptic number.

138330578 is a deficient number, since it is larger than the sum of its proper divisors (72087982).

138330578 is an equidigital number, since it uses as much as digits as its factorization.

138330578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974232.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 138330578 is about 11761.4020422737. The cubic root of 138330578 is about 517.1772317302.

The spelling of 138330578 in words is "one hundred thirty-eight million, three hundred thirty thousand, five hundred seventy-eight".