1815018150023 has 12 divisors (see below), whose sum is σ = 1965489064200. Its totient is φ = 1675303864416.

The previous prime is 1815018149999. The next prime is 1815018150031. The reversal of 1815018150023 is 3200518105181.

It is a de Polignac number, because none of the positive numbers 2^k-1815018150023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1815018150623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2684753 + ... + 3292101.

It is an arithmetic number, because the mean of its divisors is an integer number (163790755350).

Almost surely, 2^{1815018150023} is an apocalyptic number.

1815018150023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1815018150023 is a deficient number, since it is larger than the sum of its proper divisors (150470914177).

1815018150023 is a wasteful number, since it uses less digits than its factorization.

1815018150023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625058 (or 625045 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 35.

The spelling of 1815018150023 in words is "one trillion, eight hundred fifteen billion, eighteen million, one hundred fifty thousand, twenty-three".