1081174261 has 2 divisors, whose sum is σ = 1081174262. Its totient is φ = 1081174260.

The previous prime is 1081174253. The next prime is 1081174291. The reversal of 1081174261 is 1624711801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742835025 + 338339236 = 27255^2 + 18394^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081174261 - 2³ = 1081174253 is a prime.

It is a super-2 number, since 2×1081174261² = 2337875565297792242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081174231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540587130 + 540587131.

It is an arithmetic number, because the mean of its divisors is an integer number (540587131).

Almost surely, 2^1081174261 is an apocalyptic number.

It is an amenable number.

1081174261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081174261 is an equidigital number, since it uses as much as digits as its factorization.

1081174261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 1081174261 is about 32881.2144088384. The cubic root of 1081174261 is about 1026.3572774074.

The spelling of 1081174261 in words is "one billion, eighty-one million, one hundred seventy-four thousand, two hundred sixty-one".