210146393 has 2 divisors, whose sum is σ = 210146394. Its totient is φ = 210146392.

The previous prime is 210146381. The next prime is 210146407. The reversal of 210146393 is 393641012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131859289 + 78287104 = 11483^2 + 8848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210146393 is a prime.

It is not a weakly prime, because it can be changed into another prime (210116393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105073196 + 105073197.

It is an arithmetic number, because the mean of its divisors is an integer number (105073197).

Almost surely, 2^210146393 is an apocalyptic number.

It is an amenable number.

210146393 is a deficient number, since it is larger than the sum of its proper divisors (1).

210146393 is an equidigital number, since it uses as much as digits as its factorization.

210146393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 210146393 is about 14496.4269045858. The cubic root of 210146393 is about 594.5302820142.

The spelling of 210146393 in words is "two hundred ten million, one hundred forty-six thousand, three hundred ninety-three".