138119749 has 8 divisors (see below), whose sum is σ = 141055992. Its totient is φ = 135195840.

The previous prime is 138119717. The next prime is 138119771. The reversal of 138119749 is 947911831.

It can be written as a sum of positive squares in 4 ways, for example, as 39753025 + 98366724 = 6305^2 + 9918^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 138119749 - 2⁵ = 138119717 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 (138119789) 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, 21607 + ... + 27259.

It is an arithmetic number, because the mean of its divisors is an integer number (17631999).

Almost surely, 2^138119749 is an apocalyptic number.

It is an amenable number.

138119749 is a deficient number, since it is larger than the sum of its proper divisors (2936243).

138119749 is an equidigital number, since it uses as much as digits as its factorization.

138119749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167.

The product of its digits is 54432, while the sum is 43.

The square root of 138119749 is about 11752.4358751707. The cubic root of 138119749 is about 516.9143556526.

The spelling of 138119749 in words is "one hundred thirty-eight million, one hundred nineteen thousand, seven hundred forty-nine".