1050566381 has 2 divisors, whose sum is σ = 1050566382. Its totient is φ = 1050566380.

The previous prime is 1050566359. The next prime is 1050566417. The reversal of 1050566381 is 1836650501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 965096356 + 85470025 = 31066^2 + 9245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1050566381 is a prime.

It is a super-2 number, since 2×1050566381² = 2207379441774874322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050566351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525283190 + 525283191.

It is an arithmetic number, because the mean of its divisors is an integer number (525283191).

Almost surely, 2^1050566381 is an apocalyptic number.

It is an amenable number.

1050566381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050566381 is an equidigital number, since it uses as much as digits as its factorization.

1050566381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1050566381 is about 32412.4417623850. The cubic root of 1050566381 is about 1016.5790755796.

The spelling of 1050566381 in words is "one billion, fifty million, five hundred sixty-six thousand, three hundred eighty-one".