1165606938 has 36 divisors (see below), whose sum is σ = 2682790110. Its totient is φ = 365678976.

The previous prime is 1165606873. The next prime is 1165606943. The reversal of 1165606938 is 8396065611.

1165606938 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 606 + 9 + 38 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 984892689 + 180714249 = 31383^2 + 13443^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1165606893 and 1165606902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 106833 + ... + 117236.

Almost surely, 2^1165606938 is an apocalyptic number.

1165606938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1165606938 is an abundant number, since it is smaller than the sum of its proper divisors (1517183172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165606938 is a wasteful number, since it uses less digits than its factorization.

1165606938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224111 (or 224091 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1165606938 is about 34140.9861896226. The cubic root of 1165606938 is about 1052.4077588926.

The spelling of 1165606938 in words is "one billion, one hundred sixty-five million, six hundred six thousand, nine hundred thirty-eight".