1022430991 has 2 divisors, whose sum is σ = 1022430992. Its totient is φ = 1022430990.

The previous prime is 1022430977. The next prime is 1022431049. The reversal of 1022430991 is 1990342201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022430991 - 2¹³ = 1022422799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022430901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511215495 + 511215496.

It is an arithmetic number, because the mean of its divisors is an integer number (511215496).

Almost surely, 2^1022430991 is an apocalyptic number.

1022430991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022430991 is an equidigital number, since it uses as much as digits as its factorization.

1022430991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1022430991 is about 31975.4748361928. The cubic root of 1022430991 is about 1007.4217779414.

The spelling of 1022430991 in words is "one billion, twenty-two million, four hundred thirty thousand, nine hundred ninety-one".