1182740881 has 21 divisors (see below), whose sum is σ = 1461831519. Its totient is φ = 954143904.

The previous prime is 1182740869. The next prime is 1182740893. The reversal of 1182740881 is 1880472811.

The square root of 1182740881 is 34391.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1182740869) and next prime (1182740893).

It can be written as a sum of positive squares in 3 ways, for example, as 12006225 + 1170734656 = 3465^2 + 34216^2 .

It is not a de Polignac number, because 1182740881 - 2⁹ = 1182740369 is a prime.

It is a super-2 number, since 2×1182740881² = 2797751983177312322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1182740831) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 69572985 + ... + 69573001.

Almost surely, 2^1182740881 is an apocalyptic number.

1182740881 is the 34391-st square number.

1182740881 is the 17196-th centered octagonal number.

It is an amenable number.

1182740881 is a deficient number, since it is larger than the sum of its proper divisors (279090638).

1182740881 is an frugal number, since it uses more digits than its factorization.

1182740881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 40.

The cubic root of 1182740881 is about 1057.5393501966.

Multiplying 1182740881 by its product of nonzero digits (28672), we get a cube (33911546540032 = 32368³).

The spelling of 1182740881 in words is "one billion, one hundred eighty-two million, seven hundred forty thousand, eight hundred eighty-one".