985380819 has 16 divisors (see below), whose sum is σ = 1356748800. Its totient is φ = 635747616.

The previous prime is 985380769. The next prime is 985380829. The reversal of 985380819 is 918083589.

It is not a de Polignac number, because 985380819 - 2¹² = 985376723 is a prime.

It is a super-2 number, since 2×985380819² = 1941950716906221522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (985380829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20979 + ... + 49100.

It is an arithmetic number, because the mean of its divisors is an integer number (84796800).

Almost surely, 2^985380819 is an apocalyptic number.

985380819 is a deficient number, since it is larger than the sum of its proper divisors (371367981).

985380819 is a wasteful number, since it uses less digits than its factorization.

985380819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70234.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 985380819 is about 31390.7760178050. The cubic root of 985380819 is about 995.1029981843.

The spelling of 985380819 in words is "nine hundred eighty-five million, three hundred eighty thousand, eight hundred nineteen".