653129791 has 2 divisors, whose sum is σ = 653129792. Its totient is φ = 653129790.

The previous prime is 653129779. The next prime is 653129797. The reversal of 653129791 is 197921356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653129791 - 2¹⁷ = 652998719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653129797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326564895 + 326564896.

It is an arithmetic number, because the mean of its divisors is an integer number (326564896).

Almost surely, 2^653129791 is an apocalyptic number.

653129791 is a deficient number, since it is larger than the sum of its proper divisors (1).

653129791 is an equidigital number, since it uses as much as digits as its factorization.

653129791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 43.

The square root of 653129791 is about 25556.4041093421. The cubic root of 653129791 is about 867.6272117564.

The spelling of 653129791 in words is "six hundred fifty-three million, one hundred twenty-nine thousand, seven hundred ninety-one".