1790992321 has 2 divisors, whose sum is σ = 1790992322. Its totient is φ = 1790992320.

The previous prime is 1790992261. The next prime is 1790992327. The reversal of 1790992321 is 1232990971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1486873600 + 304118721 = 38560^2 + 17439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790992321 - 2⁹ = 1790991809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1790992327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895496160 + 895496161.

It is an arithmetic number, because the mean of its divisors is an integer number (895496161).

Almost surely, 2^1790992321 is an apocalyptic number.

It is an amenable number.

1790992321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790992321 is an equidigital number, since it uses as much as digits as its factorization.

1790992321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1790992321 is about 42320.1172139209. The cubic root of 1790992321 is about 1214.4078744149.

The spelling of 1790992321 in words is "one billion, seven hundred ninety million, nine hundred ninety-two thousand, three hundred twenty-one".