1835377004221 has 2 divisors, whose sum is σ = 1835377004222. Its totient is φ = 1835377004220.

The previous prime is 1835377004159. The next prime is 1835377004249. The reversal of 1835377004221 is 1224007735381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1832939607321 + 2437396900 = 1353861^2 + 49370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1835377004221 - 2¹³ = 1835376996029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1835377004291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917688502110 + 917688502111.

It is an arithmetic number, because the mean of its divisors is an integer number (917688502111).

Almost surely, 2^{1835377004221} is an apocalyptic number.

It is an amenable number.

1835377004221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1835377004221 is an equidigital number, since it uses as much as digits as its factorization.

1835377004221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 1835377004221 in words is "one trillion, eight hundred thirty-five billion, three hundred seventy-seven million, four thousand, two hundred twenty-one".