1818135107397 has 224 divisors, whose sum is σ = 3259857775104. Its totient is φ = 992093184000.

The previous prime is 1818135107359. The next prime is 1818135107401. The reversal of 1818135107397 is 7937015318181.

1818135107397 is a `hidden beast` number, since 1 + 8 + 18 + 135 + 107 + 397 = 666.

It is not a de Polignac number, because 1818135107397 - 2¹¹ = 1818135105349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818135107317) 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 223 ways as a sum of consecutive naturals, for example, 2049757288 + ... + 2049758174.

It is an arithmetic number, because the mean of its divisors is an integer number (14552936496).

Almost surely, 2^{1818135107397} is an apocalyptic number.

It is an amenable number.

1818135107397 is a deficient number, since it is larger than the sum of its proper divisors (1441722667707).

1818135107397 is an equidigital number, since it uses as much as digits as its factorization.

1818135107397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 1818135107397 in words is "one trillion, eight hundred eighteen billion, one hundred thirty-five million, one hundred seven thousand, three hundred ninety-seven".