1818450130215 has 32 divisors (see below), whose sum is σ = 2983651200000. Its totient is φ = 945436701440.

The previous prime is 1818450130207. The next prime is 1818450130249. The reversal of 1818450130215 is 5120310548181.

It is not a de Polignac number, because 1818450130215 - 2³ = 1818450130207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9497715 + ... + 9687284.

It is an arithmetic number, because the mean of its divisors is an integer number (93239100000).

Almost surely, 2^{1818450130215} is an apocalyptic number.

1818450130215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1818450130215 is a deficient number, since it is larger than the sum of its proper divisors (1165201069785).

1818450130215 is a wasteful number, since it uses less digits than its factorization.

1818450130215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19185167.

The product of its (nonzero) digits is 38400, while the sum is 39.

Adding to 1818450130215 its reverse (5120310548181), we get a palindrome (6938760678396).

The spelling of 1818450130215 in words is "one trillion, eight hundred eighteen billion, four hundred fifty million, one hundred thirty thousand, two hundred fifteen".