947198653 has 2 divisors, whose sum is σ = 947198654. Its totient is φ = 947198652.

The previous prime is 947198647. The next prime is 947198663. The reversal of 947198653 is 356891749.

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., 945993049 + 1205604 = 30757^2 + 1098^2 .

It is a cyclic number.

It is not a de Polignac number, because 947198653 - 2²¹ = 945101501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947198653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947198663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473599326 + 473599327.

It is an arithmetic number, because the mean of its divisors is an integer number (473599327).

Almost surely, 2^947198653 is an apocalyptic number.

It is an amenable number.

947198653 is a deficient number, since it is larger than the sum of its proper divisors (1).

947198653 is an equidigital number, since it uses as much as digits as its factorization.

947198653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 947198653 is about 30776.5926151678. The cubic root of 947198653 is about 982.0803554190.

The spelling of 947198653 in words is "nine hundred forty-seven million, one hundred ninety-eight thousand, six hundred fifty-three".