138703450 has 24 divisors (see below), whose sum is σ = 258697728. Its totient is φ = 55328880.

The previous prime is 138703441. The next prime is 138703457. The reversal of 138703450 is 54307831.

It is not an unprimeable number, because it can be changed into a prime (138703457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15529 + ... + 22771.

It is an arithmetic number, because the mean of its divisors is an integer number (10779072).

Almost surely, 2^138703450 is an apocalyptic number.

138703450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138703450 is a deficient number, since it is larger than the sum of its proper divisors (119994278).

138703450 is a wasteful number, since it uses less digits than its factorization.

138703450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638 (or 7633 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 138703450 is about 11777.2428861767. The cubic root of 138703450 is about 517.6415009759.

The spelling of 138703450 in words is "one hundred thirty-eight million, seven hundred three thousand, four hundred fifty".