1162040991 has 8 divisors (see below), whose sum is σ = 1602815280. Its totient is φ = 747980352.

The previous prime is 1162040989. The next prime is 1162040993. The reversal of 1162040991 is 1990402611.

It is an interprime number because it is at equal distance from previous prime (1162040989) and next prime (1162040993).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1162040991 - 2¹ = 1162040989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162040993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6678310 + ... + 6678483.

It is an arithmetic number, because the mean of its divisors is an integer number (200351910).

Almost surely, 2^1162040991 is an apocalyptic number.

1162040991 is a deficient number, since it is larger than the sum of its proper divisors (440774289).

1162040991 is a wasteful number, since it uses less digits than its factorization.

1162040991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13356825.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1162040991 is about 34088.7223433205. The cubic root of 1162040991 is about 1051.3334505350. Note that the first 3 decimals are identical.

The spelling of 1162040991 in words is "one billion, one hundred sixty-two million, forty thousand, nine hundred ninety-one".