1197080881 has 4 divisors (see below), whose sum is σ = 1199700772. Its totient is φ = 1194460992.

The previous prime is 1197080867. The next prime is 1197080887. The reversal of 1197080881 is 1880807911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1880807911 = 23 ⋅81774257.

It can be written as a sum of positive squares in 2 ways, for example, as 757130256 + 439950625 = 27516^2 + 20975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197080881 - 2¹⁵ = 1197048113 is a prime.

It is a super-2 number, since 2×1197080881² = 2866005271311472322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197080887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309260 + ... + 1310173.

It is an arithmetic number, because the mean of its divisors is an integer number (299925193).

Almost surely, 2^1197080881 is an apocalyptic number.

It is an amenable number.

1197080881 is a deficient number, since it is larger than the sum of its proper divisors (2619891).

1197080881 is an equidigital number, since it uses as much as digits as its factorization.

1197080881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619890.

The product of its (nonzero) digits is 32256, while the sum is 43.

The square root of 1197080881 is about 34598.8566429586. The cubic root of 1197080881 is about 1061.7961954176.

The spelling of 1197080881 in words is "one billion, one hundred ninety-seven million, eighty thousand, eight hundred eighty-one".