1953168653 has 2 divisors, whose sum is σ = 1953168654. Its totient is φ = 1953168652.

The previous prime is 1953168649. The next prime is 1953168677. The reversal of 1953168653 is 3568613591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1798862569 + 154306084 = 42413^2 + 12422^2 .

It is an emirp because it is prime and its reverse (3568613591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1953168653 - 2² = 1953168649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1953168598 and 1953168607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953168683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976584326 + 976584327.

It is an arithmetic number, because the mean of its divisors is an integer number (976584327).

Almost surely, 2^1953168653 is an apocalyptic number.

It is an amenable number.

1953168653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953168653 is an equidigital number, since it uses as much as digits as its factorization.

1953168653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 1953168653 is about 44194.6676987168. The cubic root of 1953168653 is about 1250.0093125706.

The spelling of 1953168653 in words is "one billion, nine hundred fifty-three million, one hundred sixty-eight thousand, six hundred fifty-three".