1618368113 has 48 divisors (see below), whose sum is σ = 1872944640. Its totient is φ = 1394131200.

The previous prime is 1618368071. The next prime is 1618368121. The reversal of 1618368113 is 3118638161.

It is not a de Polignac number, because 1618368113 - 2⁸ = 1618367857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1618368163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19498370 + ... + 19498452.

It is an arithmetic number, because the mean of its divisors is an integer number (39019680).

Almost surely, 2^1618368113 is an apocalyptic number.

It is an amenable number.

1618368113 is a deficient number, since it is larger than the sum of its proper divisors (254576527).

1618368113 is a wasteful number, since it uses less digits than its factorization.

1618368113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 207 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 1618368113 is about 40228.9462079235. The cubic root of 1618368113 is about 1174.0658005002.

The spelling of 1618368113 in words is "one billion, six hundred eighteen million, three hundred sixty-eight thousand, one hundred thirteen".