158193149 has 4 divisors (see below), whose sum is σ = 165071136. Its totient is φ = 151315164.

The previous prime is 158193137. The next prime is 158193163. The reversal of 158193149 is 941391851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941391851 = 37 ⋅25443023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158193149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158193199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3438959 + ... + 3439004.

It is an arithmetic number, because the mean of its divisors is an integer number (41267784).

Almost surely, 2^158193149 is an apocalyptic number.

It is an amenable number.

158193149 is a deficient number, since it is larger than the sum of its proper divisors (6877987).

158193149 is an equidigital number, since it uses as much as digits as its factorization.

158193149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877986.

The product of its digits is 38880, while the sum is 41.

The square root of 158193149 is about 12577.4857980441. The cubic root of 158193149 is about 540.8322204235.

The spelling of 158193149 in words is "one hundred fifty-eight million, one hundred ninety-three thousand, one hundred forty-nine".