1161680969 has 2 divisors, whose sum is σ = 1161680970. Its totient is φ = 1161680968.

The previous prime is 1161680953. The next prime is 1161681023. The reversal of 1161680969 is 9690861611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 773118025 + 388562944 = 27805^2 + 19712^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161680969 - 2⁴ = 1161680953 is a prime.

It is a super-2 number, since 2×1161680969² = 2699005347473557922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1161680929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580840484 + 580840485.

It is an arithmetic number, because the mean of its divisors is an integer number (580840485).

Almost surely, 2^1161680969 is an apocalyptic number.

It is an amenable number.

1161680969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161680969 is an equidigital number, since it uses as much as digits as its factorization.

1161680969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 1161680969 is about 34083.4412728527. The cubic root of 1161680969 is about 1051.2248650748.

The spelling of 1161680969 in words is "one billion, one hundred sixty-one million, six hundred eighty thousand, nine hundred sixty-nine".