1165353345 has 32 divisors (see below), whose sum is σ = 2231107200. Its totient is φ = 573711552.

The previous prime is 1165353323. The next prime is 1165353359. The reversal of 1165353345 is 5433535611.

1165353345 is a `hidden beast` number, since 116 + 5 + 3 + 533 + 4 + 5 = 666.

It is not a de Polignac number, because 1165353345 - 2¹⁵ = 1165320577 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330255 + ... + 333764.

It is an arithmetic number, because the mean of its divisors is an integer number (69722100).

Almost surely, 2^1165353345 is an apocalyptic number.

1165353345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1165353345 is a deficient number, since it is larger than the sum of its proper divisors (1065753855).

1165353345 is a wasteful number, since it uses less digits than its factorization.

1165353345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664046 (or 664040 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 1165353345 is about 34137.2720790634. The cubic root of 1165353345 is about 1052.3314316766.

Adding to 1165353345 its reverse (5433535611), we get a palindrome (6598888956).

The spelling of 1165353345 in words is "one billion, one hundred sixty-five million, three hundred fifty-three thousand, three hundred forty-five".