158992745 has 8 divisors (see below), whose sum is σ = 190946184. Its totient is φ = 127090944.

The previous prime is 158992727. The next prime is 158992751. The reversal of 158992745 is 547299851.

It can be written as a sum of positive squares in 4 ways, for example, as 41422096 + 117570649 = 6436^2 + 10843^2 .

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 158992745 - 2⁸ = 158992489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158992693 and 158992702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5774 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (23868273).

Almost surely, 2^158992745 is an apocalyptic number.

It is an amenable number.

158992745 is a deficient number, since it is larger than the sum of its proper divisors (31953439).

158992745 is a wasteful number, since it uses less digits than its factorization.

158992745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25819.

The product of its digits is 907200, while the sum is 50.

The square root of 158992745 is about 12609.2325301741. The cubic root of 158992745 is about 541.7419115457.

The spelling of 158992745 in words is "one hundred fifty-eight million, nine hundred ninety-two thousand, seven hundred forty-five".