138574783 has 4 divisors (see below), whose sum is σ = 138638808. Its totient is φ = 138510760.

The previous prime is 138574729. The next prime is 138574873. The reversal of 138574783 is 387475831.

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 138574783 - 2²¹ = 136477631 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 (138574703) 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, 28648 + ... + 33133.

It is an arithmetic number, because the mean of its divisors is an integer number (34659702).

Almost surely, 2^138574783 is an apocalyptic number.

138574783 is a deficient number, since it is larger than the sum of its proper divisors (64025).

138574783 is an equidigital number, since it uses as much as digits as its factorization.

138574783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64024.

The product of its digits is 564480, while the sum is 46.

The square root of 138574783 is about 11771.7790923887. The cubic root of 138574783 is about 517.4813896393.

The spelling of 138574783 in words is "one hundred thirty-eight million, five hundred seventy-four thousand, seven hundred eighty-three".