138467515 has 4 divisors (see below), whose sum is σ = 166161024. Its totient is φ = 110774008.

The previous prime is 138467509. The next prime is 138467519. The reversal of 138467515 is 515764831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515764831 = 1879 ⋅274489.

It is a cyclic number.

It is not a de Polignac number, because 138467515 - 2³ = 138467507 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138467519) 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, 13846747 + ... + 13846756.

It is an arithmetic number, because the mean of its divisors is an integer number (41540256).

Almost surely, 2^138467515 is an apocalyptic number.

138467515 is a deficient number, since it is larger than the sum of its proper divisors (27693509).

138467515 is an equidigital number, since it uses as much as digits as its factorization.

138467515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27693508.

The product of its digits is 100800, while the sum is 40.

The square root of 138467515 is about 11767.2220596027. Note that the first 3 decimals coincide. The cubic root of 138467515 is about 517.3478311339.

The spelling of 138467515 in words is "one hundred thirty-eight million, four hundred sixty-seven thousand, five hundred fifteen".