1813455336 has 128 divisors (see below), whose sum is σ = 5745346560. Its totient is φ = 463276800.

The previous prime is 1813455317. The next prime is 1813455341. The reversal of 1813455336 is 6335543181.

It is a junction number, because it is equal to n+sod(n) for n = 1813455294 and 1813455303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104685 + ... + 120771.

It is an arithmetic number, because the mean of its divisors is an integer number (44885520).

Almost surely, 2^1813455336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813455336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872673280).

1813455336 is an abundant number, since it is smaller than the sum of its proper divisors (3931891224).

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

1813455336 is a wasteful number, since it uses less digits than its factorization.

1813455336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16175 (or 16171 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1813455336 is about 42584.6842890728. The cubic root of 1813455336 is about 1219.4639174789.

It can be divided in two parts, 181345 and 5336, that added together give a palindrome (186681).

The spelling of 1813455336 in words is "one billion, eight hundred thirteen million, four hundred fifty-five thousand, three hundred thirty-six".