653381279 has 2 divisors, whose sum is σ = 653381280. Its totient is φ = 653381278.

The previous prime is 653381273. The next prime is 653381299. The reversal of 653381279 is 972183356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653381279 - 2⁸ = 653381023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653381273) 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, 326690639 + 326690640.

It is an arithmetic number, because the mean of its divisors is an integer number (326690640).

Almost surely, 2^653381279 is an apocalyptic number.

653381279 is a deficient number, since it is larger than the sum of its proper divisors (1).

653381279 is an equidigital number, since it uses as much as digits as its factorization.

653381279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 653381279 is about 25561.3238898145. The cubic root of 653381279 is about 867.7385575846.

The spelling of 653381279 in words is "six hundred fifty-three million, three hundred eighty-one thousand, two hundred seventy-nine".