138096861 has 8 divisors (see below), whose sum is σ = 210433344. Its totient is φ = 78912480.

The previous prime is 138096851. The next prime is 138096877. The reversal of 138096861 is 168690831.

138096861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 138096861 - 2¹¹ = 138094813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138096821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3288000 + ... + 3288041.

It is an arithmetic number, because the mean of its divisors is an integer number (26304168).

Almost surely, 2^138096861 is an apocalyptic number.

It is an amenable number.

138096861 is a deficient number, since it is larger than the sum of its proper divisors (72336483).

138096861 is an equidigital number, since it uses as much as digits as its factorization.

138096861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576051.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 138096861 is about 11751.4620792478. The cubic root of 138096861 is about 516.8858012293.

The spelling of 138096861 in words is "one hundred thirty-eight million, ninety-six thousand, eight hundred sixty-one".