1835195189 has 2 divisors, whose sum is σ = 1835195190. Its totient is φ = 1835195188.

The previous prime is 1835195147. The next prime is 1835195213. The reversal of 1835195189 is 9815915381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1396292689 + 438902500 = 37367^2 + 20950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1835195189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1835195129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917597594 + 917597595.

It is an arithmetic number, because the mean of its divisors is an integer number (917597595).

Almost surely, 2^1835195189 is an apocalyptic number.

It is an amenable number.

1835195189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1835195189 is an equidigital number, since it uses as much as digits as its factorization.

1835195189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 50.

The square root of 1835195189 is about 42839.1782017349. The cubic root of 1835195189 is about 1224.3175849854.

The spelling of 1835195189 in words is "one billion, eight hundred thirty-five million, one hundred ninety-five thousand, one hundred eighty-nine".