2355684493 has 4 divisors (see below), whose sum is σ = 2356786908. Its totient is φ = 2354582080.

The previous prime is 2355684473. The next prime is 2355684497. The reversal of 2355684493 is 3944865532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1383616809 + 972067684 = 37197^2 + 31178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2355684493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2355684497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547996 + ... + 552277.

It is an arithmetic number, because the mean of its divisors is an integer number (589196727).

Almost surely, 2^2355684493 is an apocalyptic number.

It is an amenable number.

2355684493 is a deficient number, since it is larger than the sum of its proper divisors (1102415).

2355684493 is a wasteful number, since it uses less digits than its factorization.

2355684493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102414.

The product of its digits is 3110400, while the sum is 49.

The square root of 2355684493 is about 48535.3942293663. The cubic root of 2355684493 is about 1330.5740249284.

The spelling of 2355684493 in words is "two billion, three hundred fifty-five million, six hundred eighty-four thousand, four hundred ninety-three".