915456985 has 4 divisors (see below), whose sum is σ = 1098548388. Its totient is φ = 732365584.

The previous prime is 915456967. The next prime is 915456991. The reversal of 915456985 is 589654519.

915456985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151708489 + 763748496 = 12317^2 + 27636^2 .

It is a cyclic number.

It is not a de Polignac number, because 915456985 - 2⁹ = 915456473 is a prime.

It is a super-2 number, since 2×915456985² = 1676122982770580450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91545694 + ... + 91545703.

It is an arithmetic number, because the mean of its divisors is an integer number (274637097).

Almost surely, 2^915456985 is an apocalyptic number.

It is an amenable number.

915456985 is a deficient number, since it is larger than the sum of its proper divisors (183091403).

915456985 is a wasteful number, since it uses less digits than its factorization.

915456985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183091402.

The product of its digits is 1944000, while the sum is 52.

The square root of 915456985 is about 30256.5197106343. The cubic root of 915456985 is about 970.9852832624.

The spelling of 915456985 in words is "nine hundred fifteen million, four hundred fifty-six thousand, nine hundred eighty-five".