815441949 has 48 divisors (see below), whose sum is σ = 1396162560. Its totient is φ = 448791840.

The previous prime is 815441917. The next prime is 815441953. The reversal of 815441949 is 949144518.

It is a happy number.

It is not a de Polignac number, because 815441949 - 2⁵ = 815441917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815441909) 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 47 ways as a sum of consecutive naturals, for example, 465894 + ... + 467640.

It is an arithmetic number, because the mean of its divisors is an integer number (29086720).

Almost surely, 2^815441949 is an apocalyptic number.

It is an amenable number.

815441949 is a deficient number, since it is larger than the sum of its proper divisors (580720611).

815441949 is a wasteful number, since it uses less digits than its factorization.

815441949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030 (or 2027 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 815441949 is about 28555.9441973121. The cubic root of 815441949 is about 934.2526744020.

The spelling of 815441949 in words is "eight hundred fifteen million, four hundred forty-one thousand, nine hundred forty-nine".