138026351 has 4 divisors (see below), whose sum is σ = 139773600. Its totient is φ = 136279104.

The previous prime is 138026333. The next prime is 138026389. The reversal of 138026351 is 153620831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138026351 - 2¹⁴ = 138009967 is a prime.

It is a super-3 number, since 3×138026351³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138022351) 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, 873506 + ... + 873663.

It is an arithmetic number, because the mean of its divisors is an integer number (34943400).

Almost surely, 2^138026351 is an apocalyptic number.

138026351 is a deficient number, since it is larger than the sum of its proper divisors (1747249).

138026351 is an equidigital number, since it uses as much as digits as its factorization.

138026351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747248.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 138026351 is about 11748.4616439771. The cubic root of 138026351 is about 516.7978151057.

The spelling of 138026351 in words is "one hundred thirty-eight million, twenty-six thousand, three hundred fifty-one".