2190171671 has 2 divisors, whose sum is σ = 2190171672. Its totient is φ = 2190171670.

The previous prime is 2190171649. The next prime is 2190171707. The reversal of 2190171671 is 1761710912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2190171671 is a prime.

It is a super-3 number, since 3×2190171671³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190171601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095085835 + 1095085836.

It is an arithmetic number, because the mean of its divisors is an integer number (1095085836).

Almost surely, 2^2190171671 is an apocalyptic number.

2190171671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190171671 is an equidigital number, since it uses as much as digits as its factorization.

2190171671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 35.

The square root of 2190171671 is about 46799.2699836226. The cubic root of 2190171671 is about 1298.6517918256.

The spelling of 2190171671 in words is "two billion, one hundred ninety million, one hundred seventy-one thousand, six hundred seventy-one".