1145983 has 2 divisors, whose sum is σ = 1145984. Its totient is φ = 1145982.

The previous prime is 1145971. The next prime is 1145999. The reversal of 1145983 is 3895411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145983 is a prime.

1145983 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572991 + 572992.

It is an arithmetic number, because the mean of its divisors is an integer number (572992).

2^1145983 is an apocalyptic number.

1145983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145983 is an equidigital number, since it uses as much as digits as its factorization.

1145983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 1145983 is about 1070.5059551446. The cubic root of 1145983 is about 104.6468254996.

The spelling of 1145983 in words is "one million, one hundred forty-five thousand, nine hundred eighty-three".