1618918802 has 18 divisors (see below), whose sum is σ = 2540604213. Its totient is φ = 773639592.

The previous prime is 1618918801. The next prime is 1618918813. The reversal of 1618918802 is 2088198161.

It can be written as a sum of positive squares in 2 ways, for example, as 1505517601 + 113401201 = 38801^2 + 10649^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=28451.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1618918801) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 1308128 + ... + 1309364.

Almost surely, 2^1618918802 is an apocalyptic number.

1618918802 is a deficient number, since it is larger than the sum of its proper divisors (921685411).

1618918802 is an frugal number, since it uses more digits than its factorization.

1618918802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 44.

The square root of 1618918802 is about 40235.7900630769. The cubic root of 1618918802 is about 1174.1989535194.

The spelling of 1618918802 in words is "one billion, six hundred eighteen million, nine hundred eighteen thousand, eight hundred two".