1813385623254 has 64 divisors (see below), whose sum is σ = 3647508074496. Its totient is φ = 601019979264.

The previous prime is 1813385623253. The next prime is 1813385623261. The reversal of 1813385623254 is 4523265833181.

It is a junction number, because it is equal to n+sod(n) for n = 1813385623197 and 1813385623206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813385623253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1520020882 + ... + 1520022074.

It is an arithmetic number, because the mean of its divisors is an integer number (56992313664).

Almost surely, 2^{1813385623254} is an apocalyptic number.

1813385623254 is an abundant number, since it is smaller than the sum of its proper divisors (1834122451242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1813385623254 is a wasteful number, since it uses less digits than its factorization.

1813385623254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149.

The product of its digits is 4147200, while the sum is 51.

The spelling of 1813385623254 in words is "one trillion, eight hundred thirteen billion, three hundred eighty-five million, six hundred twenty-three thousand, two hundred fifty-four".