1813897012307 has 4 divisors (see below), whose sum is σ = 1856080663800. Its totient is φ = 1771713360816.

The previous prime is 1813897012297. The next prime is 1813897012309. The reversal of 1813897012307 is 7032107983181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1813897012307 - 2³⁰ = 1812823270483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1813897012309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21091825682 + ... + 21091825767.

It is an arithmetic number, because the mean of its divisors is an integer number (464020165950).

Almost surely, 2^{1813897012307} is an apocalyptic number.

1813897012307 is a deficient number, since it is larger than the sum of its proper divisors (42183651493).

1813897012307 is an equidigital number, since it uses as much as digits as its factorization.

1813897012307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42183651492.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 1813897012307 in words is "one trillion, eight hundred thirteen billion, eight hundred ninety-seven million, twelve thousand, three hundred seven".