1322040491 has 2 divisors, whose sum is σ = 1322040492. Its totient is φ = 1322040490.

The previous prime is 1322040413. The next prime is 1322040497. The reversal of 1322040491 is 1940402231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1322040491 - 2¹⁸ = 1321778347 is a prime.

It is a super-4 number, since 4×1322040491⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1322040491.

It is not a weakly prime, because it can be changed into another prime (1322040497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661020245 + 661020246.

It is an arithmetic number, because the mean of its divisors is an integer number (661020246).

Almost surely, 2^1322040491 is an apocalyptic number.

1322040491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322040491 is an equidigital number, since it uses as much as digits as its factorization.

1322040491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1322040491 is about 36359.8747385081. The cubic root of 1322040491 is about 1097.5262567767.

The spelling of 1322040491 in words is "one billion, three hundred twenty-two million, forty thousand, four hundred ninety-one".