4163491 has 2 divisors, whose sum is σ = 4163492.
Its totient is φ = 4163490.
The previous prime is 4163479. The next prime is 4163503. The reversal of 4163491 is 1943614.
It is a balanced prime because it is at equal distance from previous prime (4163479) and next prime (4163503).
It is a cyclic number.
It is not a de Polignac number, because 4163491 - 25 = 4163459 is a prime.
It is an Ulam number.
4163491 is a lucky number.
It is equal to p293923 and since 4163491 and 293923 have the same sum of digits, it is a Honaker prime.
It is not a weakly prime, because it can be changed into another prime (4163461) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2081745 + 2081746.
It is an arithmetic number, because the mean of its divisors is an integer number (2081746).
Almost surely, 24163491 is an apocalyptic number.
4163491 is a deficient number, since it is larger than the sum of its proper divisors (1).
4163491 is an equidigital number, since it uses as much as digits as its factorization.
4163491 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2592, while the sum is 28.
The square root of 4163491 is about 2040.4634277536.
The cubic root of 4163491 is about 160.8740060778.
The spelling of 4163491 in words is "four million, one hundred sixty-three thousand, four hundred ninety-one".