1813940274276 has 243 divisors, whose sum is σ = 5139637888203. Its totient is φ = 539161384320.

The previous prime is 1813940274203. The next prime is 1813940274277. The reversal of 1813940274276 is 6724720493181.

The square root of 1813940274276 is 1346826.

It is a perfect power (a square), and thus also a powerful number.

1813940274276 is a `hidden beast` number, since 1 + 8 + 13 + 94 + 0 + 274 + 276 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1069102232676 + 744838041600 = 1033974^2 + 863040^2 .

It is not an unprimeable number, because it can be changed into a prime (1813940274277) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3256624990 + ... + 3256625546.

Almost surely, 2^{1813940274276} is an apocalyptic number.

1813940274276 is the 1346826-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813940274276

1813940274276 is an abundant number, since it is smaller than the sum of its proper divisors (3325697613927).

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

1813940274276 is a wasteful number, since it uses less digits than its factorization.

1813940274276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 1813940274276 in words is "one trillion, eight hundred thirteen billion, nine hundred forty million, two hundred seventy-four thousand, two hundred seventy-six".