1230452591 has 2 divisors, whose sum is σ = 1230452592. Its totient is φ = 1230452590.

The previous prime is 1230452569. The next prime is 1230452617. The reversal of 1230452591 is 1952540321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230452591 - 2¹⁰ = 1230451567 is a prime.

It is a super-2 number, since 2×1230452591² = 3028027157397226562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230452491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615226295 + 615226296.

It is an arithmetic number, because the mean of its divisors is an integer number (615226296).

Almost surely, 2^1230452591 is an apocalyptic number.

1230452591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230452591 is an equidigital number, since it uses as much as digits as its factorization.

1230452591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1230452591 is about 35077.8076709477. The cubic root of 1230452591 is about 1071.5726694767.

The spelling of 1230452591 in words is "one billion, two hundred thirty million, four hundred fifty-two thousand, five hundred ninety-one".