1110665401 has 2 divisors, whose sum is σ = 1110665402. Its totient is φ = 1110665400.

The previous prime is 1110665393. The next prime is 1110665407. The reversal of 1110665401 is 1045660111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978438400 + 132227001 = 31280^2 + 11499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110665401 - 2³ = 1110665393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1110665407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555332700 + 555332701.

It is an arithmetic number, because the mean of its divisors is an integer number (555332701).

Almost surely, 2^1110665401 is an apocalyptic number.

It is an amenable number.

1110665401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110665401 is an equidigital number, since it uses as much as digits as its factorization.

1110665401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1110665401 is about 33326.6470110631. The cubic root of 1110665401 is about 1035.6056576344.

The spelling of 1110665401 in words is "one billion, one hundred ten million, six hundred sixty-five thousand, four hundred one".