1138196916 has 36 divisors (see below), whose sum is σ = 2882476324. Its totient is φ = 378691200.

The previous prime is 1138196911. The next prime is 1138196989. The reversal of 1138196916 is 6196918311.

It can be written as a sum of positive squares in 2 ways, for example, as 812250000 + 325946916 = 28500^2 + 18054^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1138196916² = 2590984439183822112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138196911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9745 + ... + 48696.

Almost surely, 2^1138196916 is an apocalyptic number.

It is an amenable number.

1138196916 is an abundant number, since it is smaller than the sum of its proper divisors (1744279408).

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

1138196916 is a wasteful number, since it uses less digits than its factorization.

1138196916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58992 (or 58987 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 1138196916 is about 33737.1740962399. The cubic root of 1138196916 is about 1044.0928815941.

The spelling of 1138196916 in words is "one billion, one hundred thirty-eight million, one hundred ninety-six thousand, nine hundred sixteen".