202161419 has 4 divisors (see below), whose sum is σ = 202189944. Its totient is φ = 202132896.

The previous prime is 202161403. The next prime is 202161431. The reversal of 202161419 is 914161202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 914161202 = 2 ⋅457080601.

It is a cyclic number.

It is not a de Polignac number, because 202161419 - 2⁴ = 202161403 is a prime.

It is a super-2 number, since 2×202161419² = 81738478664187122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202161469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5459 + ... + 20835.

It is an arithmetic number, because the mean of its divisors is an integer number (50547486).

Almost surely, 2^202161419 is an apocalyptic number.

202161419 is a deficient number, since it is larger than the sum of its proper divisors (28525).

202161419 is a wasteful number, since it uses less digits than its factorization.

202161419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28524.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 202161419 is about 14218.3479701406. The cubic root of 202161419 is about 586.9026796975.

The spelling of 202161419 in words is "two hundred two million, one hundred sixty-one thousand, four hundred nineteen".