475194999989 has 2 divisors, whose sum is σ = 475194999990. Its totient is φ = 475194999988.

The previous prime is 475194999953. The next prime is 475195000001. The reversal of 475194999989 is 989999491574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 463304842225 + 11890157764 = 680665^2 + 109042^2 .

It is a cyclic number.

It is not a de Polignac number, because 475194999989 - 2³⁶ = 406475523253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475194990989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237597499994 + 237597499995.

It is an arithmetic number, because the mean of its divisors is an integer number (237597499995).

Almost surely, 2^475194999989 is an apocalyptic number.

It is an amenable number.

475194999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

475194999989 is an equidigital number, since it uses as much as digits as its factorization.

475194999989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2380855680, while the sum is 83.

The spelling of 475194999989 in words is "four hundred seventy-five billion, one hundred ninety-four million, nine hundred ninety-nine thousand, nine hundred eighty-nine".