1792800661 has 2 divisors, whose sum is σ = 1792800662. Its totient is φ = 1792800660.

The previous prime is 1792800617. The next prime is 1792800679. The reversal of 1792800661 is 1660082971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1423930225 + 368870436 = 37735^2 + 19206^2 .

It is a cyclic number.

It is not a de Polignac number, because 1792800661 - 2⁷ = 1792800533 is a prime.

It is a super-3 number, since 3×1792800661³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1792804661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 896400330 + 896400331.

It is an arithmetic number, because the mean of its divisors is an integer number (896400331).

Almost surely, 2^1792800661 is an apocalyptic number.

It is an amenable number.

1792800661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1792800661 is an equidigital number, since it uses as much as digits as its factorization.

1792800661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1792800661 is about 42341.4768400914. The cubic root of 1792800661 is about 1214.8164605030.

The spelling of 1792800661 in words is "one billion, seven hundred ninety-two million, eight hundred thousand, six hundred sixty-one".