1011717961 has 2 divisors, whose sum is σ = 1011717962. Its totient is φ = 1011717960.

The previous prime is 1011717943. The next prime is 1011717977. The reversal of 1011717961 is 1697171101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009015225 + 2702736 = 31765^2 + 1644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011717961 - 2⁹ = 1011717449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011717361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505858980 + 505858981.

It is an arithmetic number, because the mean of its divisors is an integer number (505858981).

Almost surely, 2^1011717961 is an apocalyptic number.

It is an amenable number.

1011717961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011717961 is an equidigital number, since it uses as much as digits as its factorization.

1011717961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 34.

The square root of 1011717961 is about 31807.5142222714. The cubic root of 1011717961 is about 1003.8908288173.

The spelling of 1011717961 in words is "one billion, eleven million, seven hundred seventeen thousand, nine hundred sixty-one".