1813407515145 has 48 divisors (see below), whose sum is σ = 3199499110080. Its totient is φ = 949974807168.

The previous prime is 1813407515141. The next prime is 1813407515147. The reversal of 1813407515145 is 5415157043181.

1813407515145 is a `hidden beast` number, since 1 + 81 + 3 + 4 + 0 + 7 + 51 + 514 + 5 = 666.

It is not a de Polignac number, because 1813407515145 - 2² = 1813407515141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1813407515145.

It is not an unprimeable number, because it can be changed into a prime (1813407515141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 757075 + ... + 2049384.

It is an arithmetic number, because the mean of its divisors is an integer number (66656231460).

Almost surely, 2^{1813407515145} is an apocalyptic number.

1813407515145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1813407515145 is a deficient number, since it is larger than the sum of its proper divisors (1386091594935).

1813407515145 is a wasteful number, since it uses less digits than its factorization.

1813407515145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806726 (or 2806723 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 45.

The spelling of 1813407515145 in words is "one trillion, eight hundred thirteen billion, four hundred seven million, five hundred fifteen thousand, one hundred forty-five".