1051065181 has 2 divisors, whose sum is σ = 1051065182. Its totient is φ = 1051065180.

The previous prime is 1051065139. The next prime is 1051065187. The reversal of 1051065181 is 1815601501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709369956 + 341695225 = 26634^2 + 18485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051065181 - 2²¹ = 1048968029 is a prime.

It is a super-2 number, since 2×1051065181² = 2209476029421125522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051065187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525532590 + 525532591.

It is an arithmetic number, because the mean of its divisors is an integer number (525532591).

Almost surely, 2^1051065181 is an apocalyptic number.

It is an amenable number.

1051065181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051065181 is an equidigital number, since it uses as much as digits as its factorization.

1051065181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 1051065181 is about 32420.1354253803. The cubic root of 1051065181 is about 1016.7399378289.

Adding to 1051065181 its reverse (1815601501), we get a palindrome (2866666682).

The spelling of 1051065181 in words is "one billion, fifty-one million, sixty-five thousand, one hundred eighty-one".