981785495 has 8 divisors (see below), whose sum is σ = 1186619280. Its totient is φ = 779777280.

The previous prime is 981785447. The next prime is 981785507. The reversal of 981785495 is 594587189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-981785495 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 981785495.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705626 + ... + 707015.

It is an arithmetic number, because the mean of its divisors is an integer number (148327410).

Almost surely, 2^981785495 is an apocalyptic number.

981785495 is a deficient number, since it is larger than the sum of its proper divisors (204833785).

981785495 is a wasteful number, since it uses less digits than its factorization.

981785495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412785.

The product of its digits is 3628800, while the sum is 56.

The square root of 981785495 is about 31333.4564802545. The cubic root of 981785495 is about 993.8912575856.

The spelling of 981785495 in words is "nine hundred eighty-one million, seven hundred eighty-five thousand, four hundred ninety-five".