1812796854797 has 2 divisors, whose sum is σ = 1812796854798. Its totient is φ = 1812796854796.

The previous prime is 1812796854787. The next prime is 1812796854823. The reversal of 1812796854797 is 7974586972181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1485207753481 + 327589101316 = 1218691^2 + 572354^2 .

It is a cyclic number.

It is not a de Polignac number, because 1812796854797 - 2⁶ = 1812796854733 is a prime.

It is a super-2 number, since 2×1812796854797² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812796854787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906398427398 + 906398427399.

It is an arithmetic number, because the mean of its divisors is an integer number (906398427399).

Almost surely, 2^{1812796854797} is an apocalyptic number.

It is an amenable number.

1812796854797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812796854797 is an equidigital number, since it uses as much as digits as its factorization.

1812796854797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 426746880, while the sum is 74.

The spelling of 1812796854797 in words is "one trillion, eight hundred twelve billion, seven hundred ninety-six million, eight hundred fifty-four thousand, seven hundred ninety-seven".