1195298381 has 2 divisors, whose sum is σ = 1195298382. Its totient is φ = 1195298380.

The previous prime is 1195298353. The next prime is 1195298387. The reversal of 1195298381 is 1838925911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094617225 + 100681156 = 33085^2 + 10034^2 .

It is an emirp because it is prime and its reverse (1838925911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1195298381 is a prime.

It is a super-2 number, since 2×1195298381² = 2857476439242442322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1195298387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597649190 + 597649191.

It is an arithmetic number, because the mean of its divisors is an integer number (597649191).

Almost surely, 2^1195298381 is an apocalyptic number.

It is an amenable number.

1195298381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195298381 is an equidigital number, since it uses as much as digits as its factorization.

1195298381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 47.

The square root of 1195298381 is about 34573.0875248364. The cubic root of 1195298381 is about 1061.2689150038.

The spelling of 1195298381 in words is "one billion, one hundred ninety-five million, two hundred ninety-eight thousand, three hundred eighty-one".