1305606494 has 32 divisors (see below), whose sum is σ = 2133915840. Its totient is φ = 596602368.

The previous prime is 1305606487. The next prime is 1305606503. The reversal of 1305606494 is 4946065031.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1054844 + ... + 1056080.

It is an arithmetic number, because the mean of its divisors is an integer number (66684870).

Almost surely, 2^1305606494 is an apocalyptic number.

1305606494 is a deficient number, since it is larger than the sum of its proper divisors (828309346).

1305606494 is a wasteful number, since it uses less digits than its factorization.

1305606494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1305606494 is about 36133.1771921596. The cubic root of 1305606494 is about 1092.9595785436.

The spelling of 1305606494 in words is "one billion, three hundred five million, six hundred six thousand, four hundred ninety-four".