1813715338 has 32 divisors (see below), whose sum is σ = 2913580800. Its totient is φ = 844286976.

The previous prime is 1813715333. The next prime is 1813715389. The reversal of 1813715338 is 8335173181.

It is a self number, because there is not a number n which added to its sum of digits gives 1813715338.

It is not an unprimeable number, because it can be changed into a prime (1813715333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698170 + ... + 700762.

It is an arithmetic number, because the mean of its divisors is an integer number (91049400).

Almost surely, 2^1813715338 is an apocalyptic number.

1813715338 is a deficient number, since it is larger than the sum of its proper divisors (1099865462).

1813715338 is a wasteful number, since it uses less digits than its factorization.

1813715338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926.

The product of its digits is 60480, while the sum is 40.

The square root of 1813715338 is about 42587.7369438668. The cubic root of 1813715338 is about 1219.5221944230.

The spelling of 1813715338 in words is "one billion, eight hundred thirteen million, seven hundred fifteen thousand, three hundred thirty-eight".