653978383 has 2 divisors, whose sum is σ = 653978384. Its totient is φ = 653978382.

The previous prime is 653978341. The next prime is 653978393. The reversal of 653978383 is 383879356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653978383 - 2⁹ = 653977871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 653978383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653978393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326989191 + 326989192.

It is an arithmetic number, because the mean of its divisors is an integer number (326989192).

Almost surely, 2^653978383 is an apocalyptic number.

653978383 is a deficient number, since it is larger than the sum of its proper divisors (1).

653978383 is an equidigital number, since it uses as much as digits as its factorization.

653978383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The square root of 653978383 is about 25573.0010558010. The cubic root of 653978383 is about 868.0028098297.

The spelling of 653978383 in words is "six hundred fifty-three million, nine hundred seventy-eight thousand, three hundred eighty-three".