985109265 has 48 divisors (see below), whose sum is σ = 2018764800. Its totient is φ = 434802816.

The previous prime is 985109261. The next prime is 985109269. The reversal of 985109265 is 562901589.

It is an interprime number because it is at equal distance from previous prime (985109261) and next prime (985109269).

It is not a de Polignac number, because 985109265 - 2² = 985109261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 985109265.

It is not an unprimeable number, because it can be changed into a prime (985109261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44785 + ... + 63054.

It is an arithmetic number, because the mean of its divisors is an integer number (42057600).

Almost surely, 2^985109265 is an apocalyptic number.

It is an amenable number.

985109265 is an abundant number, since it is smaller than the sum of its proper divisors (1033655535).

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

985109265 is a wasteful number, since it uses less digits than its factorization.

985109265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107886 (or 107883 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 985109265 is about 31386.4503408716. The cubic root of 985109265 is about 995.0115786974.

The spelling of 985109265 in words is "nine hundred eighty-five million, one hundred nine thousand, two hundred sixty-five".