138256803 has 6 divisors (see below), whose sum is σ = 199704284. Its totient is φ = 92171196.

The previous prime is 138256793. The next prime is 138256813. The reversal of 138256803 is 308652831.

138256803 is a `hidden beast` number, since 13 + 82 + 568 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (138256793) and next prime (138256813).

It is not a de Polignac number, because 138256803 - 2¹² = 138252707 is a prime.

It is a super-2 number, since 2×138256803² = 38229887151561618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138256813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7680925 + ... + 7680942.

Almost surely, 2^138256803 is an apocalyptic number.

138256803 is a deficient number, since it is larger than the sum of its proper divisors (61447481).

138256803 is a wasteful number, since it uses less digits than its factorization.

138256803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361873 (or 15361870 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 138256803 is about 11758.2653057328. The cubic root of 138256803 is about 517.0852743921.

It can be divided in two parts, 1382 and 56803, that added together give a palindrome (58185).

The spelling of 138256803 in words is "one hundred thirty-eight million, two hundred fifty-six thousand, eight hundred three".