618128351 has 2 divisors, whose sum is σ = 618128352. Its totient is φ = 618128350.

The previous prime is 618128339. The next prime is 618128353. The reversal of 618128351 is 153821816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618128351 is a prime.

Together with 618128353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618128353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309064175 + 309064176.

It is an arithmetic number, because the mean of its divisors is an integer number (309064176).

Almost surely, 2^618128351 is an apocalyptic number.

618128351 is a deficient number, since it is larger than the sum of its proper divisors (1).

618128351 is an equidigital number, since it uses as much as digits as its factorization.

618128351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The square root of 618128351 is about 24862.1871724915. The cubic root of 618128351 is about 851.8429911733.

The spelling of 618128351 in words is "six hundred eighteen million, one hundred twenty-eight thousand, three hundred fifty-one".