1810341403421 has 2 divisors, whose sum is σ = 1810341403422. Its totient is φ = 1810341403420.

The previous prime is 1810341403363. The next prime is 1810341403439. The reversal of 1810341403421 is 1243041430181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1576245096196 + 234096307225 = 1255486^2 + 483835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1810341403421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1810341403441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905170701710 + 905170701711.

It is an arithmetic number, because the mean of its divisors is an integer number (905170701711).

Almost surely, 2^{1810341403421} is an apocalyptic number.

It is an amenable number.

1810341403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1810341403421 is an equidigital number, since it uses as much as digits as its factorization.

1810341403421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 1810341403421 in words is "one trillion, eight hundred ten billion, three hundred forty-one million, four hundred three thousand, four hundred twenty-one".