1078369261 has 2 divisors, whose sum is σ = 1078369262. Its totient is φ = 1078369260.

The previous prime is 1078369231. The next prime is 1078369277. The reversal of 1078369261 is 1629638701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889828900 + 188540361 = 29830^2 + 13731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078369261 - 2²⁵ = 1044814829 is a prime.

It is a super-2 number, since 2×1078369261² = 2325760526139372242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078369231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539184630 + 539184631.

It is an arithmetic number, because the mean of its divisors is an integer number (539184631).

Almost surely, 2^1078369261 is an apocalyptic number.

It is an amenable number.

1078369261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078369261 is an equidigital number, since it uses as much as digits as its factorization.

1078369261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1078369261 is about 32838.5331736970. The cubic root of 1078369261 is about 1025.4689144600.

The spelling of 1078369261 in words is "one billion, seventy-eight million, three hundred sixty-nine thousand, two hundred sixty-one".