158645081 has 8 divisors (see below), whose sum is σ = 183346560. Its totient is φ = 134453088.

The previous prime is 158645077. The next prime is 158645083. The reversal of 158645081 is 180546851.

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

It is not a de Polignac number, because 158645081 - 2² = 158645077 is a prime.

It is a super-2 number, since 2×158645081² = 50336523450993122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158645083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126701 + ... + 127946.

It is an arithmetic number, because the mean of its divisors is an integer number (22918320).

Almost surely, 2^158645081 is an apocalyptic number.

It is an amenable number.

158645081 is a deficient number, since it is larger than the sum of its proper divisors (24701479).

158645081 is an equidigital number, since it uses as much as digits as its factorization.

158645081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254743.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 158645081 is about 12595.4388966800. The cubic root of 158645081 is about 541.3467538738.

The spelling of 158645081 in words is "one hundred fifty-eight million, six hundred forty-five thousand, eighty-one".