1813379373 has 16 divisors (see below), whose sum is σ = 2893141440. Its totient is φ = 1115925552.

The previous prime is 1813379371. The next prime is 1813379387. The reversal of 1813379373 is 3739733181.

1813379373 is a `hidden beast` number, since 181 + 33 + 79 + 373 = 666.

It is not a de Polignac number, because 1813379373 - 2¹ = 1813379371 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813379371) 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 15 ways as a sum of consecutive naturals, for example, 2582811 + ... + 2583512.

It is an arithmetic number, because the mean of its divisors is an integer number (180821340).

Almost surely, 2^1813379373 is an apocalyptic number.

1813379373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1813379373 is a deficient number, since it is larger than the sum of its proper divisors (1079762067).

1813379373 is a wasteful number, since it uses less digits than its factorization.

1813379373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166345 (or 5166339 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 1813379373 is about 42583.7923745643. The cubic root of 1813379373 is about 1219.4468900527.

The spelling of 1813379373 in words is "one billion, eight hundred thirteen million, three hundred seventy-nine thousand, three hundred seventy-three".