1812926508793 has 2 divisors, whose sum is σ = 1812926508794. Its totient is φ = 1812926508792.

The previous prime is 1812926508781. The next prime is 1812926508857. The reversal of 1812926508793 is 3978056292181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1481653741824 + 331272766969 = 1217232^2 + 575563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1812926508793 - 2³⁷ = 1675487555321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1812926500793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906463254396 + 906463254397.

It is an arithmetic number, because the mean of its divisors is an integer number (906463254397).

Almost surely, 2^{1812926508793} is an apocalyptic number.

It is an amenable number.

1812926508793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812926508793 is an equidigital number, since it uses as much as digits as its factorization.

1812926508793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 1812926508793 in words is "one trillion, eight hundred twelve billion, nine hundred twenty-six million, five hundred eight thousand, seven hundred ninety-three".