2785185145 has 8 divisors (see below), whose sum is σ = 3423740040. Its totient is φ = 2173802880.

The previous prime is 2785185127. The next prime is 2785185197. The reversal of 2785185145 is 5415815872.

It can be written as a sum of positive squares in 4 ways, for example, as 22316176 + 2762868969 = 4724^2 + 52563^2 .

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

It is not a de Polignac number, because 2785185145 - 2⁷ = 2785185017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2785185095 and 2785185104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6792930 + ... + 6793339.

It is an arithmetic number, because the mean of its divisors is an integer number (427967505).

Almost surely, 2^2785185145 is an apocalyptic number.

It is an amenable number.

2785185145 is a deficient number, since it is larger than the sum of its proper divisors (638554895).

2785185145 is a wasteful number, since it uses less digits than its factorization.

2785185145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13586315.

The product of its digits is 448000, while the sum is 46.

The square root of 2785185145 is about 52774.8533394457. The cubic root of 2785185145 is about 1406.9695228934.

The spelling of 2785185145 in words is "two billion, seven hundred eighty-five million, one hundred eighty-five thousand, one hundred forty-five".