138175654 has 4 divisors (see below), whose sum is σ = 207263484. Its totient is φ = 69087826.

The previous prime is 138175637. The next prime is 138175753. The reversal of 138175654 is 456571831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 456571831 = 1453 ⋅314227.

It is a super-2 number, since 2×138175654² = 38185022716655432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34543912 + ... + 34543915.

It is an arithmetic number, because the mean of its divisors is an integer number (51815871).

Almost surely, 2^138175654 is an apocalyptic number.

138175654 is a deficient number, since it is larger than the sum of its proper divisors (69087830).

138175654 is an equidigital number, since it uses as much as digits as its factorization.

138175654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69087829.

The product of its digits is 100800, while the sum is 40.

The square root of 138175654 is about 11754.8140776450. The cubic root of 138175654 is about 516.9840878940.

The spelling of 138175654 in words is "one hundred thirty-eight million, one hundred seventy-five thousand, six hundred fifty-four".