1041191381 has 2 divisors, whose sum is σ = 1041191382. Its totient is φ = 1041191380.

The previous prime is 1041191363. The next prime is 1041191387. The reversal of 1041191381 is 1831911401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698756356 + 342435025 = 26434^2 + 18505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1041191381 - 2¹⁸ = 1040929237 is a prime.

It is a super-2 number, since 2×1041191381² = 2168158983737374322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1041191387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520595690 + 520595691.

It is an arithmetic number, because the mean of its divisors is an integer number (520595691).

Almost surely, 2^1041191381 is an apocalyptic number.

It is an amenable number.

1041191381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041191381 is an equidigital number, since it uses as much as digits as its factorization.

1041191381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The square root of 1041191381 is about 32267.4972844192. The cubic root of 1041191381 is about 1013.5461340246.

The spelling of 1041191381 in words is "one billion, forty-one million, one hundred ninety-one thousand, three hundred eighty-one".