1026611161 has 2 divisors, whose sum is σ = 1026611162. Its totient is φ = 1026611160.

The previous prime is 1026611137. The next prime is 1026611171. The reversal of 1026611161 is 1611166201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 768398400 + 258212761 = 27720^2 + 16069^2 .

It is an emirp because it is prime and its reverse (1611166201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1026611161 - 2²⁹ = 489740249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1026611171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513305580 + 513305581.

It is an arithmetic number, because the mean of its divisors is an integer number (513305581).

Almost surely, 2^1026611161 is an apocalyptic number.

It is an amenable number.

1026611161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026611161 is an equidigital number, since it uses as much as digits as its factorization.

1026611161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1026611161 is about 32040.7734145105. The cubic root of 1026611161 is about 1008.7928462510.

Adding to 1026611161 its reverse (1611166201), we get a palindrome (2637777362).

The spelling of 1026611161 in words is "one billion, twenty-six million, six hundred eleven thousand, one hundred sixty-one".