1305748946 has 16 divisors (see below), whose sum is σ = 1969739424. Its totient is φ = 649176864.

The previous prime is 1305748897. The next prime is 1305748979. The reversal of 1305748946 is 6498475031.

It is a super-2 number, since 2×1305748946² = 3409960619960221832, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305748946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526766 + ... + 529238.

It is an arithmetic number, because the mean of its divisors is an integer number (123108714).

Almost surely, 2^1305748946 is an apocalyptic number.

1305748946 is a deficient number, since it is larger than the sum of its proper divisors (663990478).

1305748946 is a wasteful number, since it uses less digits than its factorization.

1305748946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 1305748946 is about 36135.1483461740. The cubic root of 1305748946 is about 1092.9993272776. Note that the first 3 decimals are identical.

The spelling of 1305748946 in words is "one billion, three hundred five million, seven hundred forty-eight thousand, nine hundred forty-six".