253146389 has 2 divisors, whose sum is σ = 253146390. Its totient is φ = 253146388.

The previous prime is 253146359. The next prime is 253146409. The reversal of 253146389 is 983641352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212722225 + 40424164 = 14585^2 + 6358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253146389 is a prime.

It is a Chen prime.

It is equal to p_13841897 and since 253146389 and 13841897 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253146359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126573194 + 126573195.

It is an arithmetic number, because the mean of its divisors is an integer number (126573195).

Almost surely, 2^253146389 is an apocalyptic number.

It is an amenable number.

253146389 is a deficient number, since it is larger than the sum of its proper divisors (1).

253146389 is an equidigital number, since it uses as much as digits as its factorization.

253146389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 253146389 is about 15910.5747539176. The cubic root of 253146389 is about 632.5923159375.

The spelling of 253146389 in words is "two hundred fifty-three million, one hundred forty-six thousand, three hundred eighty-nine".