158643071 has 4 divisors (see below), whose sum is σ = 158670192. Its totient is φ = 158615952.

The previous prime is 158643059. The next prime is 158643083. The reversal of 158643071 is 170346851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170346851 = 17 ⋅10020403.

It is an interprime number because it is at equal distance from previous prime (158643059) and next prime (158643083).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158643071 is a prime.

It is a super-2 number, since 2×158643071² = 50335247952622082, 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 (158643041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755 + ... + 17828.

It is an arithmetic number, because the mean of its divisors is an integer number (39667548).

Almost surely, 2^158643071 is an apocalyptic number.

158643071 is a deficient number, since it is larger than the sum of its proper divisors (27121).

158643071 is an equidigital number, since it uses as much as digits as its factorization.

158643071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27120.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 158643071 is about 12595.3591056389. The cubic root of 158643071 is about 541.3444676141.

The spelling of 158643071 in words is "one hundred fifty-eight million, six hundred forty-three thousand, seventy-one".