1145903897 has 2 divisors, whose sum is σ = 1145903898. Its totient is φ = 1145903896.

The previous prime is 1145903867. The next prime is 1145903929. The reversal of 1145903897 is 7983095411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121982016 + 23921881 = 33496^2 + 4891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145903897 - 2⁶ = 1145903833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145903827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572951948 + 572951949.

It is an arithmetic number, because the mean of its divisors is an integer number (572951949).

Almost surely, 2^1145903897 is an apocalyptic number.

It is an amenable number.

1145903897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145903897 is an equidigital number, since it uses as much as digits as its factorization.

1145903897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 1145903897 is about 33851.2022977028. The cubic root of 1145903897 is about 1046.4441764882. Note that the first 3 decimals are identical.

The spelling of 1145903897 in words is "one billion, one hundred forty-five million, nine hundred three thousand, eight hundred ninety-seven".