158096781 has 6 divisors (see below), whose sum is σ = 228362030. Its totient is φ = 105397848.

The previous prime is 158096749. The next prime is 158096833. The reversal of 158096781 is 187690851.

158096781 is a `hidden beast` number, since 1 + 580 + 9 + 67 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 147403881 + 10692900 = 12141^2 + 3270^2 .

It is not a de Polignac number, because 158096781 - 2⁵ = 158096749 is a prime.

It is a super-2 number, since 2×158096781² = 49989184325123922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158096381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8783146 + ... + 8783163.

Almost surely, 2^158096781 is an apocalyptic number.

It is an amenable number.

158096781 is a deficient number, since it is larger than the sum of its proper divisors (70265249).

158096781 is a wasteful number, since it uses less digits than its factorization.

158096781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17566315 (or 17566312 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 158096781 is about 12573.6542421048. The cubic root of 158096781 is about 540.7223768418.

The spelling of 158096781 in words is "one hundred fifty-eight million, ninety-six thousand, seven hundred eighty-one".