1190381 has 2 divisors, whose sum is σ = 1190382. Its totient is φ = 1190380.

The previous prime is 1190359. The next prime is 1190417. The reversal of 1190381 is 1830911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1190281 + 100 = 1091^2 + 10^2 .

It is an emirp because it is prime and its reverse (1830911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1190381 is a prime.

It is a super-2 number, since 2×1190381² = 2834013850322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1190311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595190 + 595191.

It is an arithmetic number, because the mean of its divisors is an integer number (595191).

2^1190381 is an apocalyptic number.

It is an amenable number.

1190381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1190381 is an equidigital number, since it uses as much as digits as its factorization.

1190381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1190381 is about 1091.0458285517. The cubic root of 1190381 is about 105.9811583931.

The spelling of 1190381 in words is "one million, one hundred ninety thousand, three hundred eighty-one".