1145992609 has 2 divisors, whose sum is σ = 1145992610. Its totient is φ = 1145992608.

The previous prime is 1145992607. The next prime is 1145992663. The reversal of 1145992609 is 9062995411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077152400 + 68840209 = 32820^2 + 8297^2 .

It is an emirp because it is prime and its reverse (9062995411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145992609 - 2¹ = 1145992607 is a prime.

Together with 1145992607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1145992607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572996304 + 572996305.

It is an arithmetic number, because the mean of its divisors is an integer number (572996305).

Almost surely, 2^1145992609 is an apocalyptic number.

It is an amenable number.

1145992609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145992609 is an equidigital number, since it uses as much as digits as its factorization.

1145992609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 1145992609 is about 33852.5125950793. The cubic root of 1145992609 is about 1046.4711798464.

The spelling of 1145992609 in words is "one billion, one hundred forty-five million, nine hundred ninety-two thousand, six hundred nine".