138501199 has 8 divisors (see below), whose sum is σ = 140121072. Its totient is φ = 136886400.

The previous prime is 138501197. The next prime is 138501229. The reversal of 138501199 is 991105831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 138501199 - 2¹ = 138501197 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 (138501197) 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, 88407 + ... + 89959.

It is an arithmetic number, because the mean of its divisors is an integer number (17515134).

Almost surely, 2^138501199 is an apocalyptic number.

138501199 is a deficient number, since it is larger than the sum of its proper divisors (1619873).

138501199 is a wasteful number, since it uses less digits than its factorization.

138501199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 138501199 is about 11768.6532364583. The cubic root of 138501199 is about 517.3897782324.

The spelling of 138501199 in words is "one hundred thirty-eight million, five hundred one thousand, one hundred ninety-nine".