158156449 has 4 divisors (see below), whose sum is σ = 172534320. Its totient is φ = 143778580.

The previous prime is 158156447. The next prime is 158156461. The reversal of 158156449 is 944651851.

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.

It is not a de Polignac number, because 158156449 - 2¹ = 158156447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158156443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7188919 + ... + 7188940.

It is an arithmetic number, because the mean of its divisors is an integer number (43133580).

Almost surely, 2^158156449 is an apocalyptic number.

It is an amenable number.

158156449 is a deficient number, since it is larger than the sum of its proper divisors (14377871).

158156449 is a wasteful number, since it uses less digits than its factorization.

158156449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14377870.

The product of its digits is 172800, while the sum is 43.

The square root of 158156449 is about 12576.0267572871. The cubic root of 158156449 is about 540.7903937541.

The spelling of 158156449 in words is "one hundred fifty-eight million, one hundred fifty-six thousand, four hundred forty-nine".