138152594 has 8 divisors (see below), whose sum is σ = 208374348. Its totient is φ = 68694480.

The previous prime is 138152579. The next prime is 138152627. The reversal of 138152594 is 495251831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113699569 + 24453025 = 10663^2 + 4945^2 .

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

It is a super-2 number, since 2×138152594² = 38172278457857672, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190457 + ... + 191180.

Almost surely, 2^138152594 is an apocalyptic number.

138152594 is a deficient number, since it is larger than the sum of its proper divisors (70221754).

138152594 is a wasteful number, since it uses less digits than its factorization.

138152594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381820.

The product of its digits is 43200, while the sum is 38.

The square root of 138152594 is about 11753.8331619944. The cubic root of 138152594 is about 516.9553266374.

The spelling of 138152594 in words is "one hundred thirty-eight million, one hundred fifty-two thousand, five hundred ninety-four".