1618782353 has 2 divisors, whose sum is σ = 1618782354. Its totient is φ = 1618782352.

The previous prime is 1618782287. The next prime is 1618782359. The reversal of 1618782353 is 3532878161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1504121089 + 114661264 = 38783^2 + 10708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618782353 - 2⁸ = 1618782097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618782359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809391176 + 809391177.

It is an arithmetic number, because the mean of its divisors is an integer number (809391177).

Almost surely, 2^1618782353 is an apocalyptic number.

It is an amenable number.

1618782353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618782353 is an equidigital number, since it uses as much as digits as its factorization.

1618782353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 1618782353 is about 40234.0944100896. The cubic root of 1618782353 is about 1174.1659638528.

The spelling of 1618782353 in words is "one billion, six hundred eighteen million, seven hundred eighty-two thousand, three hundred fifty-three".