138151643 has 8 divisors (see below), whose sum is σ = 158208000. Its totient is φ = 118175400.

The previous prime is 138151631. The next prime is 138151649. The reversal of 138151643 is 346151831.

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

It is not a de Polignac number, because 138151643 - 2¹² = 138147547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138151649) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16283 + ... + 23268.

It is an arithmetic number, because the mean of its divisors is an integer number (19776000).

Almost surely, 2^138151643 is an apocalyptic number.

138151643 is a deficient number, since it is larger than the sum of its proper divisors (20056357).

138151643 is an equidigital number, since it uses as much as digits as its factorization.

138151643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40057.

The product of its digits is 8640, while the sum is 32.

The square root of 138151643 is about 11753.7927070372. The cubic root of 138151643 is about 516.9541404475.

The spelling of 138151643 in words is "one hundred thirty-eight million, one hundred fifty-one thousand, six hundred forty-three".