1947066113 has 2 divisors, whose sum is σ = 1947066114. Its totient is φ = 1947066112.

The previous prime is 1947066109. The next prime is 1947066169. The reversal of 1947066113 is 3116607491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995528704 + 951537409 = 31552^2 + 30847^2 .

It is an emirp because it is prime and its reverse (3116607491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1947066113 - 2² = 1947066109 is a prime.

It is not a weakly prime, because it can be changed into another prime (1947066013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973533056 + 973533057.

It is an arithmetic number, because the mean of its divisors is an integer number (973533057).

Almost surely, 2^1947066113 is an apocalyptic number.

It is an amenable number.

1947066113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1947066113 is an equidigital number, since it uses as much as digits as its factorization.

1947066113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1947066113 is about 44125.5720982743. The cubic root of 1947066113 is about 1248.7060985574.

The spelling of 1947066113 in words is "one billion, nine hundred forty-seven million, sixty-six thousand, one hundred thirteen".