138060791 has 24 divisors (see below), whose sum is σ = 161668656. Its totient is φ = 116894720.

The previous prime is 138060787. The next prime is 138060799. The reversal of 138060791 is 197060831.

It is not a de Polignac number, because 138060791 - 2² = 138060787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138060799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435365 + ... + 435681.

It is an arithmetic number, because the mean of its divisors is an integer number (6736194).

Almost surely, 2^138060791 is an apocalyptic number.

138060791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138060791 is a deficient number, since it is larger than the sum of its proper divisors (23607865).

138060791 is a wasteful number, since it uses less digits than its factorization.

138060791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 138060791 is about 11749.9272763707. The cubic root of 138060791 is about 516.8407949099.

The spelling of 138060791 in words is "one hundred thirty-eight million, sixty thousand, seven hundred ninety-one".