158984138 has 8 divisors (see below), whose sum is σ = 238567680. Its totient is φ = 79461580.

The previous prime is 158984083. The next prime is 158984149. The reversal of 158984138 is 831489851.

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

It is a super-2 number, since 2×158984138² = 50551912271206088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 158984092 and 158984101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8048 + ... + 19563.

It is an arithmetic number, because the mean of its divisors is an integer number (29820960).

Almost surely, 2^158984138 is an apocalyptic number.

158984138 is a deficient number, since it is larger than the sum of its proper divisors (79583542).

158984138 is a wasteful number, since it uses less digits than its factorization.

158984138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30492.

The product of its digits is 276480, while the sum is 47.

The square root of 158984138 is about 12608.8912280184. The cubic root of 158984138 is about 541.7321357185.

The spelling of 158984138 in words is "one hundred fifty-eight million, nine hundred eighty-four thousand, one hundred thirty-eight".