158899145 has 8 divisors (see below), whose sum is σ = 191290056. Its totient is φ = 126711936.

The previous prime is 158899133. The next prime is 158899163. The reversal of 158899145 is 541998851.

It can be written as a sum of positive squares in 4 ways, for example, as 10936249 + 147962896 = 3307^2 + 12164^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158899145 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158899093 and 158899102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49202 + ... + 52331.

It is an arithmetic number, because the mean of its divisors is an integer number (23911257).

Almost surely, 2^158899145 is an apocalyptic number.

It is an amenable number.

158899145 is a deficient number, since it is larger than the sum of its proper divisors (32390911).

158899145 is a wasteful number, since it uses less digits than its factorization.

158899145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101851.

The product of its digits is 518400, while the sum is 50.

The square root of 158899145 is about 12605.5204176583. The cubic root of 158899145 is about 541.6355817533.

The spelling of 158899145 in words is "one hundred fifty-eight million, eight hundred ninety-nine thousand, one hundred forty-five".