1091797316 has 6 divisors (see below), whose sum is σ = 1910645310. Its totient is φ = 545898656.

The previous prime is 1091797313. The next prime is 1091797331. The reversal of 1091797316 is 6137971901.

It can be written as a sum of positive squares in only one way, i.e., 789385216 + 302412100 = 28096^2 + 17390^2 .

It is not an unprimeable number, because it can be changed into a prime (1091797313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136474661 + ... + 136474668.

It is an arithmetic number, because the mean of its divisors is an integer number (318440885).

Almost surely, 2^1091797316 is an apocalyptic number.

It is an amenable number.

1091797316 is a deficient number, since it is larger than the sum of its proper divisors (818847994).

1091797316 is a wasteful number, since it uses less digits than its factorization.

1091797316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272949333 (or 272949331 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 1091797316 is about 33042.3563929693. The cubic root of 1091797316 is about 1029.7078116754.

The spelling of 1091797316 in words is "one billion, ninety-one million, seven hundred ninety-seven thousand, three hundred sixteen".