1151705565 has 48 divisors (see below), whose sum is σ = 2154971520. Its totient is φ = 567262080.

The previous prime is 1151705561. The next prime is 1151705567. The reversal of 1151705565 is 5655071511.

It is a happy number.

It is not a de Polignac number, because 1151705565 - 2² = 1151705561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151705561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10830 + ... + 49200.

It is an arithmetic number, because the mean of its divisors is an integer number (44895240).

Almost surely, 2^1151705565 is an apocalyptic number.

1151705565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151705565 is a deficient number, since it is larger than the sum of its proper divisors (1003265955).

1151705565 is a wasteful number, since it uses less digits than its factorization.

1151705565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38434 (or 38431 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The square root of 1151705565 is about 33936.7877825819. The cubic root of 1151705565 is about 1048.2072401209.

The spelling of 1151705565 in words is "one billion, one hundred fifty-one million, seven hundred five thousand, five hundred sixty-five".