1011663617 has 2 divisors, whose sum is σ = 1011663618. Its totient is φ = 1011663616.

The previous prime is 1011663581. The next prime is 1011663649. The reversal of 1011663617 is 7163661101.

It is an a-pointer prime, because the next prime (1011663649) can be obtained adding 1011663617 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 991242256 + 20421361 = 31484^2 + 4519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011663617 - 2¹⁴ = 1011647233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011663017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505831808 + 505831809.

It is an arithmetic number, because the mean of its divisors is an integer number (505831809).

Almost surely, 2^1011663617 is an apocalyptic number.

It is an amenable number.

1011663617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011663617 is an equidigital number, since it uses as much as digits as its factorization.

1011663617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1011663617 is about 31806.6599472500. The cubic root of 1011663617 is about 1003.8728539725.

The spelling of 1011663617 in words is "one billion, eleven million, six hundred sixty-three thousand, six hundred seventeen".