2031695189 has 2 divisors, whose sum is σ = 2031695190. Its totient is φ = 2031695188.

The previous prime is 2031695147. The next prime is 2031695191. The reversal of 2031695189 is 9815961302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1685102500 + 346592689 = 41050^2 + 18617^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031695189 - 2⁸ = 2031694933 is a prime.

Together with 2031695191, 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 (2031695129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015847594 + 1015847595.

It is an arithmetic number, because the mean of its divisors is an integer number (1015847595).

Almost surely, 2^2031695189 is an apocalyptic number.

It is an amenable number.

2031695189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031695189 is an equidigital number, since it uses as much as digits as its factorization.

2031695189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 2031695189 is about 45074.3296012265. The cubic root of 2031695189 is about 1266.5417705647.

The spelling of 2031695189 in words is "two billion, thirty-one million, six hundred ninety-five thousand, one hundred eighty-nine".