1165819938 has 16 divisors (see below), whose sum is σ = 2335832640. Its totient is φ = 387907856.

The previous prime is 1165819933. The next prime is 1165819961. The reversal of 1165819938 is 8399185611.

It is a super-3 number, since 3×1165819938³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1165819933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171078 + ... + 177761.

It is an arithmetic number, because the mean of its divisors is an integer number (145989540).

Almost surely, 2^1165819938 is an apocalyptic number.

1165819938 is an abundant number, since it is smaller than the sum of its proper divisors (1170012702).

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

1165819938 is a wasteful number, since it uses less digits than its factorization.

1165819938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349401.

The product of its digits is 466560, while the sum is 51.

The square root of 1165819938 is about 34144.1054649262. The cubic root of 1165819938 is about 1052.4718597464.

The spelling of 1165819938 in words is "one billion, one hundred sixty-five million, eight hundred nineteen thousand, nine hundred thirty-eight".