1050661861 has 2 divisors, whose sum is σ = 1050661862. Its totient is φ = 1050661860.

The previous prime is 1050661853. The next prime is 1050661883. The reversal of 1050661861 is 1681660501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034908900 + 15752961 = 32170^2 + 3969^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050661861 - 2³ = 1050661853 is a prime.

It is a super-2 number, since 2×1050661861² = 2207780692319966642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050661841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525330930 + 525330931.

It is an arithmetic number, because the mean of its divisors is an integer number (525330931).

Almost surely, 2^1050661861 is an apocalyptic number.

It is an amenable number.

1050661861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050661861 is an equidigital number, since it uses as much as digits as its factorization.

1050661861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1050661861 is about 32413.9146201134. The cubic root of 1050661861 is about 1016.6098716757.

The spelling of 1050661861 in words is "one billion, fifty million, six hundred sixty-one thousand, eight hundred sixty-one".