1813394741 has 8 divisors (see below), whose sum is σ = 1855814400. Its totient is φ = 1771444080.

The previous prime is 1813394729. The next prime is 1813394747. The reversal of 1813394741 is 1474933181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1813394741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813394747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109421 + ... + 124898.

It is an arithmetic number, because the mean of its divisors is an integer number (231976800).

Almost surely, 2^1813394741 is an apocalyptic number.

It is an amenable number.

1813394741 is a deficient number, since it is larger than the sum of its proper divisors (42419659).

1813394741 is a wasteful number, since it uses less digits than its factorization.

1813394741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234499.

The product of its digits is 72576, while the sum is 41.

The square root of 1813394741 is about 42583.9728184208. The cubic root of 1813394741 is about 1219.4503348929.

The spelling of 1813394741 in words is "one billion, eight hundred thirteen million, three hundred ninety-four thousand, seven hundred forty-one".