11618474013 has 6 divisors (see below), whose sum is σ = 16782240254. Its totient is φ = 7745649336.

The previous prime is 11618474011. The next prime is 11618474039. The reversal of 11618474013 is 31047481611.

It can be written as a sum of positive squares in only one way, i.e., 8648442009 + 2970032004 = 92997^2 + 54498^2 .

It is not a de Polignac number, because 11618474013 - 2¹ = 11618474011 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618474011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 645470770 + ... + 645470787.

Almost surely, 2^11618474013 is an apocalyptic number.

It is an amenable number.

11618474013 is a deficient number, since it is larger than the sum of its proper divisors (5163766241).

11618474013 is a wasteful number, since it uses less digits than its factorization.

11618474013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290941563 (or 1290941560 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 11618474013 in words is "eleven billion, six hundred eighteen million, four hundred seventy-four thousand, thirteen".