138288783 has 8 divisors (see below), whose sum is σ = 194089600. Its totient is φ = 87340248.

The previous prime is 138288781. The next prime is 138288803. The reversal of 138288783 is 387882831.

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

It is not a de Polignac number, because 138288783 - 2¹ = 138288781 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 (138288781) 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, 1213003 + ... + 1213116.

It is an arithmetic number, because the mean of its divisors is an integer number (24261200).

Almost surely, 2^138288783 is an apocalyptic number.

138288783 is a deficient number, since it is larger than the sum of its proper divisors (55800817).

138288783 is a wasteful number, since it uses less digits than its factorization.

138288783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426141.

The product of its digits is 516096, while the sum is 48.

The square root of 138288783 is about 11759.6251215759. The cubic root of 138288783 is about 517.1251400910.

The spelling of 138288783 in words is "one hundred thirty-eight million, two hundred eighty-eight thousand, seven hundred eighty-three".