5618493815 has 16 divisors (see below), whose sum is σ = 7356575520. Its totient is φ = 4085368320.

The previous prime is 5618493809. The next prime is 5618493817. The reversal of 5618493815 is 5183948165.

It is not a de Polignac number, because 5618493815 - 2⁴ = 5618493799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5618493817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532067 + ... + 542523.

It is an arithmetic number, because the mean of its divisors is an integer number (459785970).

Almost surely, 2^5618493815 is an apocalyptic number.

5618493815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5618493815 is a deficient number, since it is larger than the sum of its proper divisors (1738081705).

5618493815 is a wasteful number, since it uses less digits than its factorization.

5618493815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20242.

The product of its digits is 1036800, while the sum is 50.

The square root of 5618493815 is about 74956.6128837209. The cubic root of 5618493815 is about 1777.7607045720.

The spelling of 5618493815 in words is "five billion, six hundred eighteen million, four hundred ninety-three thousand, eight hundred fifteen".