138814450 has 12 divisors (see below), whose sum is σ = 258194970. Its totient is φ = 55525760.

The previous prime is 138814427. The next prime is 138814471. The reversal of 138814450 is 54418831.

It can be written as a sum of positive squares in 3 ways, for example, as 111534721 + 27279729 = 10561^2 + 5223^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1388095 + ... + 1388194.

Almost surely, 2^138814450 is an apocalyptic number.

138814450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138814450 is a deficient number, since it is larger than the sum of its proper divisors (119380520).

138814450 is a wasteful number, since it uses less digits than its factorization.

138814450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776301 (or 2776296 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 138814450 is about 11781.9544219115. The cubic root of 138814450 is about 517.7795482177.

The spelling of 138814450 in words is "one hundred thirty-eight million, eight hundred fourteen thousand, four hundred fifty".