1790200081 has 2 divisors, whose sum is σ = 1790200082. Its totient is φ = 1790200080.

The previous prime is 1790200051. The next prime is 1790200099. The reversal of 1790200081 is 1800020971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1357185600 + 433014481 = 36840^2 + 20809^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790200081 - 2¹³ = 1790191889 is a prime.

It is a super-2 number, since 2×1790200081² = 6409632660024813122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1790200031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895100040 + 895100041.

It is an arithmetic number, because the mean of its divisors is an integer number (895100041).

Almost surely, 2^1790200081 is an apocalyptic number.

It is an amenable number.

1790200081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790200081 is an equidigital number, since it uses as much as digits as its factorization.

1790200081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1790200081 is about 42310.7560910934. The cubic root of 1790200081 is about 1214.2287847971.

The spelling of 1790200081 in words is "one billion, seven hundred ninety million, two hundred thousand, eighty-one".