1197881 has 2 divisors, whose sum is σ = 1197882. Its totient is φ = 1197880.

The previous prime is 1197829. The next prime is 1197901. The reversal of 1197881 is 1887911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 116281 = 1040^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197881 - 2¹⁰ = 1196857 is a prime.

It is a super-2 number, since 2×1197881² = 2869837780322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1197821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598940 + 598941.

It is an arithmetic number, because the mean of its divisors is an integer number (598941).

2^1197881 is an apocalyptic number.

It is an amenable number.

1197881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197881 is an equidigital number, since it uses as much as digits as its factorization.

1197881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 35.

The square root of 1197881 is about 1094.4775009108. The cubic root of 1197881 is about 106.2032708008.

It can be divided in two parts, 119 and 7881, that added together give a cube (8000 = 20³).

The spelling of 1197881 in words is "one million, one hundred ninety-seven thousand, eight hundred eighty-one".