1109780471 has 2 divisors, whose sum is σ = 1109780472. Its totient is φ = 1109780470.

The previous prime is 1109780461. The next prime is 1109780543. The reversal of 1109780471 is 1740879011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109780471 - 2¹⁸ = 1109518327 is a prime.

It is a super-3 number, since 3×1109780471³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109780411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554890235 + 554890236.

It is an arithmetic number, because the mean of its divisors is an integer number (554890236).

Almost surely, 2^1109780471 is an apocalyptic number.

1109780471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109780471 is an equidigital number, since it uses as much as digits as its factorization.

1109780471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 38.

The square root of 1109780471 is about 33313.3677523003. The cubic root of 1109780471 is about 1035.3305426704.

The spelling of 1109780471 in words is "one billion, one hundred nine million, seven hundred eighty thousand, four hundred seventy-one".