158681073 has 8 divisors (see below), whose sum is σ = 212578336. Its totient is φ = 105285600.

The previous prime is 158681063. The next prime is 158681087. The reversal of 158681073 is 370186851.

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

It is not a de Polignac number, because 158681073 - 2⁴ = 158681057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158681053) 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, 124708 + ... + 125973.

It is an arithmetic number, because the mean of its divisors is an integer number (26572292).

Almost surely, 2^158681073 is an apocalyptic number.

It is an amenable number.

158681073 is a deficient number, since it is larger than the sum of its proper divisors (53897263).

158681073 is a wasteful number, since it uses less digits than its factorization.

158681073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250895.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 158681073 is about 12596.8675868249. The cubic root of 158681073 is about 541.3876894409.

The spelling of 158681073 in words is "one hundred fifty-eight million, six hundred eighty-one thousand, seventy-three".