158441591 has 8 divisors (see below), whose sum is σ = 197537664. Its totient is φ = 123460920.

The previous prime is 158441573. The next prime is 158441593. The reversal of 158441591 is 195144851.

It is a happy number.

158441591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 158441591 - 2¹⁰ = 158440567 is a prime.

It is a super-2 number, since 2×158441591² = 50207475517222562, 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 (158441593) 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, 1028765 + ... + 1028918.

It is an arithmetic number, because the mean of its divisors is an integer number (24692208).

Almost surely, 2^158441591 is an apocalyptic number.

158441591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158441591 is a deficient number, since it is larger than the sum of its proper divisors (39096073).

158441591 is a wasteful number, since it uses less digits than its factorization.

158441591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057701.

The product of its digits is 28800, while the sum is 38.

The square root of 158441591 is about 12587.3583805340. The cubic root of 158441591 is about 541.1151976161.

The spelling of 158441591 in words is "one hundred fifty-eight million, four hundred forty-one thousand, five hundred ninety-one".