166859183419 has 2 divisors, whose sum is σ = 166859183420. Its totient is φ = 166859183418.

The previous prime is 166859183371. The next prime is 166859183443. The reversal of 166859183419 is 914381958661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166859183419 is a prime.

It is a super-2 number, since 2×166859183419² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166859183119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83429591709 + 83429591710.

It is an arithmetic number, because the mean of its divisors is an integer number (83429591710).

Almost surely, 2^166859183419 is an apocalyptic number.

166859183419 is a deficient number, since it is larger than the sum of its proper divisors (1).

166859183419 is an equidigital number, since it uses as much as digits as its factorization.

166859183419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 61.

The spelling of 166859183419 in words is "one hundred sixty-six billion, eight hundred fifty-nine million, one hundred eighty-three thousand, four hundred nineteen".