1129695945 has 32 divisors (see below), whose sum is σ = 2155548672. Its totient is φ = 493977792.

The previous prime is 1129695943. The next prime is 1129695949. The reversal of 1129695945 is 5495969211.

It is not a de Polignac number, because 1129695945 - 2¹ = 1129695943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129695943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231477 + ... + 236306.

It is an arithmetic number, because the mean of its divisors is an integer number (67360896).

Almost surely, 2^1129695945 is an apocalyptic number.

1129695945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1129695945 is a deficient number, since it is larger than the sum of its proper divisors (1025852727).

1129695945 is a wasteful number, since it uses less digits than its factorization.

1129695945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467821.

The product of its digits is 874800, while the sum is 51.

The square root of 1129695945 is about 33610.9497783089. The cubic root of 1129695945 is about 1041.4870077640.

The spelling of 1129695945 in words is "one billion, one hundred twenty-nine million, six hundred ninety-five thousand, nine hundred forty-five".