1135686481 has 2 divisors, whose sum is σ = 1135686482. Its totient is φ = 1135686480.

The previous prime is 1135686469. The next prime is 1135686523. The reversal of 1135686481 is 1846865311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588547600 + 547138881 = 24260^2 + 23391^2 .

It is an emirp because it is prime and its reverse (1846865311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1135686481 - 2²¹ = 1133589329 is a prime.

It is a super-2 number, since 2×1135686481² = 2579567566252326722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1135686401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567843240 + 567843241.

It is an arithmetic number, because the mean of its divisors is an integer number (567843241).

Almost surely, 2^1135686481 is an apocalyptic number.

It is an amenable number.

1135686481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135686481 is an equidigital number, since it uses as much as digits as its factorization.

1135686481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The square root of 1135686481 is about 33699.9477892771. The cubic root of 1135686481 is about 1043.3246909248.

The spelling of 1135686481 in words is "one billion, one hundred thirty-five million, six hundred eighty-six thousand, four hundred eighty-one".