158145791 has 8 divisors (see below), whose sum is σ = 160282800. Its totient is φ = 156016960.

The previous prime is 158145761. The next prime is 158145803. The reversal of 158145791 is 197541851.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 158145791 - 2¹⁸ = 157883647 is a prime.

It is a super-2 number, since 2×158145791² = 50020182422031362, 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 (158145761) 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, 43556 + ... + 47046.

It is an arithmetic number, because the mean of its divisors is an integer number (20035350).

Almost surely, 2^158145791 is an apocalyptic number.

158145791 is a deficient number, since it is larger than the sum of its proper divisors (2137009).

158145791 is an equidigital number, since it uses as much as digits as its factorization.

158145791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089.

The product of its digits is 50400, while the sum is 41.

The square root of 158145791 is about 12575.6030074108. The cubic root of 158145791 is about 540.7782457123.

The spelling of 158145791 in words is "one hundred fifty-eight million, one hundred forty-five thousand, seven hundred ninety-one".