1165655356 has 12 divisors (see below), whose sum is σ = 2043340992. Its totient is φ = 581843648.

The previous prime is 1165655353. The next prime is 1165655369. The reversal of 1165655356 is 6535565611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165655353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243340 + ... + 248083.

It is an arithmetic number, because the mean of its divisors is an integer number (170278416).

Almost surely, 2^1165655356 is an apocalyptic number.

It is an amenable number.

1165655356 is a deficient number, since it is larger than the sum of its proper divisors (877685636).

1165655356 is a wasteful number, since it uses less digits than its factorization.

1165655356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492020 (or 492018 counting only the distinct ones).

The product of its digits is 405000, while the sum is 43.

The square root of 1165655356 is about 34141.6952713248. The cubic root of 1165655356 is about 1052.4223306354.

The spelling of 1165655356 in words is "one billion, one hundred sixty-five million, six hundred fifty-five thousand, three hundred fifty-six".