1264061603 has 4 divisors (see below), whose sum is σ = 1444641840. Its totient is φ = 1083481368.

The previous prime is 1264061563. The next prime is 1264061609. The reversal of 1264061603 is 3061604621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1264061603 - 2¹⁴ = 1264045219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264061609) 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 in 3 ways as a sum of consecutive naturals, for example, 90290108 + ... + 90290121.

It is an arithmetic number, because the mean of its divisors is an integer number (361160460).

Almost surely, 2^1264061603 is an apocalyptic number.

1264061603 is a deficient number, since it is larger than the sum of its proper divisors (180580237).

1264061603 is an equidigital number, since it uses as much as digits as its factorization.

1264061603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180580236.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1264061603 is about 35553.6440185813. The cubic root of 1264061603 is about 1081.2415999080.

The spelling of 1264061603 in words is "one billion, two hundred sixty-four million, sixty-one thousand, six hundred three".