915821952 has 32 divisors (see below), whose sum is σ = 2432653080. Its totient is φ = 305273856.

The previous prime is 915821941. The next prime is 915821953. The reversal of 915821952 is 259128519.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915821953) 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, 1192093 + ... + 1192860.

Almost surely, 2^915821952 is an apocalyptic number.

It is an amenable number.

915821952 is an abundant number, since it is smaller than the sum of its proper divisors (1516831128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

915821952 is a wasteful number, since it uses less digits than its factorization.

915821952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384970 (or 2384958 counting only the distinct ones).

The product of its digits is 64800, while the sum is 42.

The square root of 915821952 is about 30262.5503221391. The cubic root of 915821952 is about 971.1143009765.

The spelling of 915821952 in words is "nine hundred fifteen million, eight hundred twenty-one thousand, nine hundred fifty-two".