1205268045 has 24 divisors (see below), whose sum is σ = 1946570976. Its totient is φ = 636818112.

The previous prime is 1205268041. The next prime is 1205268079. The reversal of 1205268045 is 5408625021.

It is not a de Polignac number, because 1205268045 - 2² = 1205268041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205267997 and 1205268015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205268041) 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 in 23 ways as a sum of consecutive naturals, for example, 174834 + ... + 181596.

It is an arithmetic number, because the mean of its divisors is an integer number (81107124).

Almost surely, 2^1205268045 is an apocalyptic number.

1205268045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1205268045 is a deficient number, since it is larger than the sum of its proper divisors (741302931).

1205268045 is an equidigital number, since it uses as much as digits as its factorization.

1205268045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989 (or 6880 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1205268045 is about 34716.9705619600. The cubic root of 1205268045 is about 1064.2113361489.

The spelling of 1205268045 in words is "one billion, two hundred five million, two hundred sixty-eight thousand, forty-five".