138260783 has 4 divisors (see below), whose sum is σ = 138839520. Its totient is φ = 137682048.

The previous prime is 138260767. The next prime is 138260789. The reversal of 138260783 is 387062831.

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: 387062831 = 211 ⋅1834421.

It is a cyclic number.

It is not a de Polignac number, because 138260783 - 2⁴ = 138260767 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 (138260789) 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, 289010 + ... + 289487.

It is an arithmetic number, because the mean of its divisors is an integer number (34709880).

Almost surely, 2^138260783 is an apocalyptic number.

138260783 is a deficient number, since it is larger than the sum of its proper divisors (578737).

138260783 is an equidigital number, since it uses as much as digits as its factorization.

138260783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578736.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 138260783 is about 11758.4345471666. The cubic root of 138260783 is about 517.0902361241.

The spelling of 138260783 in words is "one hundred thirty-eight million, two hundred sixty thousand, seven hundred eighty-three".