985461865 has 16 divisors (see below), whose sum is σ = 1254225168. Its totient is φ = 740745216.

The previous prime is 985461857. The next prime is 985461907. The reversal of 985461865 is 568164589.

It can be written as a sum of positive squares in 8 ways, for example, as 318096 + 985143769 = 564^2 + 31387^2 .

It is not a de Polignac number, because 985461865 - 2³ = 985461857 is a prime.

It is a super-2 number, since 2×985461865² = 1942270174738556450, 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 15 ways as a sum of consecutive naturals, for example, 42649 + ... + 61561.

It is an arithmetic number, because the mean of its divisors is an integer number (78389073).

Almost surely, 2^985461865 is an apocalyptic number.

It is an amenable number.

985461865 is a deficient number, since it is larger than the sum of its proper divisors (268763303).

985461865 is a wasteful number, since it uses less digits than its factorization.

985461865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19548.

The product of its digits is 2073600, while the sum is 52.

The square root of 985461865 is about 31392.0669118808. The cubic root of 985461865 is about 995.1302793143.

The spelling of 985461865 in words is "nine hundred eighty-five million, four hundred sixty-one thousand, eight hundred sixty-five".