156808449 has 24 divisors (see below), whose sum is σ = 259376832. Its totient is φ = 89425440.

The previous prime is 156808433. The next prime is 156808451. The reversal of 156808449 is 944808651.

156808449 is a `hidden beast` number, since 1 + 568 + 0 + 84 + 4 + 9 = 666.

It is not a de Polignac number, because 156808449 - 2⁴ = 156808433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156808429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33259 + ... + 37679.

It is an arithmetic number, because the mean of its divisors is an integer number (10807368).

Almost surely, 2^156808449 is an apocalyptic number.

It is an amenable number.

156808449 is a deficient number, since it is larger than the sum of its proper divisors (102568383).

156808449 is a wasteful number, since it uses less digits than its factorization.

156808449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 156808449 is about 12522.3180362104. The cubic root of 156808449 is about 539.2495852360.

The spelling of 156808449 in words is "one hundred fifty-six million, eight hundred eight thousand, four hundred forty-nine".