2785423618 has 4 divisors (see below), whose sum is σ = 4178135430. Its totient is φ = 1392711808.

The previous prime is 2785423609. The next prime is 2785423631. The reversal of 2785423618 is 8163245872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2247044409 + 538379209 = 47403^2 + 23203^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696355903 + ... + 696355906.

Almost surely, 2^2785423618 is an apocalyptic number.

2785423618 is a deficient number, since it is larger than the sum of its proper divisors (1392711812).

2785423618 is a wasteful number, since it uses less digits than its factorization.

2785423618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392711811.

The product of its digits is 645120, while the sum is 46.

The square root of 2785423618 is about 52777.1126341713. The cubic root of 2785423618 is about 1407.0096775749.

The spelling of 2785423618 in words is "two billion, seven hundred eighty-five million, four hundred twenty-three thousand, six hundred eighteen".