1618135315 has 16 divisors (see below), whose sum is σ = 2026666656. Its totient is φ = 1239097600.

The previous prime is 1618135313. The next prime is 1618135339. The reversal of 1618135315 is 5135318161.

It is not a de Polignac number, because 1618135315 - 2¹ = 1618135313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1618135313) 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 in 15 ways as a sum of consecutive naturals, for example, 63601 + ... + 85330.

It is an arithmetic number, because the mean of its divisors is an integer number (126666666).

Almost surely, 2^1618135315 is an apocalyptic number.

1618135315 is a deficient number, since it is larger than the sum of its proper divisors (408531341).

1618135315 is a wasteful number, since it uses less digits than its factorization.

1618135315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149030.

The product of its digits is 10800, while the sum is 34.

The square root of 1618135315 is about 40226.0526897681. The cubic root of 1618135315 is about 1174.0095023740.

The spelling of 1618135315 in words is "one billion, six hundred eighteen million, one hundred thirty-five thousand, three hundred fifteen".