1814811956 has 6 divisors (see below), whose sum is σ = 3175920930. Its totient is φ = 907405976.

The previous prime is 1814811953. The next prime is 1814811991. The reversal of 1814811956 is 6591184181.

It can be written as a sum of positive squares in only one way, i.e., 1335902500 + 478909456 = 36550^2 + 21884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814811953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226851491 + ... + 226851498.

It is an arithmetic number, because the mean of its divisors is an integer number (529320155).

Almost surely, 2^1814811956 is an apocalyptic number.

It is an amenable number.

1814811956 is a deficient number, since it is larger than the sum of its proper divisors (1361108974).

1814811956 is a wasteful number, since it uses less digits than its factorization.

1814811956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453702993 (or 453702991 counting only the distinct ones).

The product of its digits is 69120, while the sum is 44.

The square root of 1814811956 is about 42600.6098078420. The cubic root of 1814811956 is about 1219.7679295210.

The spelling of 1814811956 in words is "one billion, eight hundred fourteen million, eight hundred eleven thousand, nine hundred fifty-six".