138100783 has 4 divisors (see below), whose sum is σ = 138129408. Its totient is φ = 138072160.

The previous prime is 138100777. The next prime is 138100789. The reversal of 138100783 is 387001831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387001831 = 12049 ⋅32119.

It is an interprime number because it is at equal distance from previous prime (138100777) and next prime (138100789).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138100783 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138100789) 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, 5098 + ... + 17383.

It is an arithmetic number, because the mean of its divisors is an integer number (34532352).

Almost surely, 2^138100783 is an apocalyptic number.

138100783 is a deficient number, since it is larger than the sum of its proper divisors (28625).

138100783 is an equidigital number, since it uses as much as digits as its factorization.

138100783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28624.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 138100783 is about 11751.6289509157. The cubic root of 138100783 is about 516.8906944299.

The spelling of 138100783 in words is "one hundred thirty-eight million, one hundred thousand, seven hundred eighty-three".