1160561655 has 32 divisors (see below), whose sum is σ = 2250789120. Its totient is φ = 562695840.

The previous prime is 1160561653. The next prime is 1160561659. The reversal of 1160561655 is 5561650611.

It is not a de Polignac number, because 1160561655 - 2¹ = 1160561653 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160561653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389277 + ... + 392246.

It is an arithmetic number, because the mean of its divisors is an integer number (70337160).

Almost surely, 2^1160561655 is an apocalyptic number.

1160561655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1160561655 is a deficient number, since it is larger than the sum of its proper divisors (1090227465).

1160561655 is a wasteful number, since it uses less digits than its factorization.

1160561655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781548 (or 781542 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1160561655 is about 34067.0171133312. The cubic root of 1160561655 is about 1050.8871278202.

It can be divided in two parts, 116056 and 1655, that added together give a palindrome (117711).

The spelling of 1160561655 in words is "one billion, one hundred sixty million, five hundred sixty-one thousand, six hundred fifty-five".