1655311265 has 16 divisors (see below), whose sum is σ = 2076883200. Its totient is φ = 1264139712.

The previous prime is 1655311193. The next prime is 1655311277. The reversal of 1655311265 is 5621135561.

It is a cyclic number.

It is not a de Polignac number, because 1655311265 - 2¹² = 1655307169 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 44396 + ... + 72674.

It is an arithmetic number, because the mean of its divisors is an integer number (129805200).

Almost surely, 2^1655311265 is an apocalyptic number.

It is an amenable number.

1655311265 is a deficient number, since it is larger than the sum of its proper divisors (421571935).

1655311265 is a wasteful number, since it uses less digits than its factorization.

1655311265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28816.

The product of its digits is 27000, while the sum is 35.

The square root of 1655311265 is about 40685.5166490485. The cubic root of 1655311265 is about 1182.9322995117.

The spelling of 1655311265 in words is "one billion, six hundred fifty-five million, three hundred eleven thousand, two hundred sixty-five".