161414819 has 4 divisors (see below), whose sum is σ = 165168696. Its totient is φ = 157660944.

The previous prime is 161414809. The next prime is 161414821. The reversal of 161414819 is 918414161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161414819 - 2⁸ = 161414563 is a prime.

It is a super-2 number, since 2×161414819² = 52109487585605522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161414809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876874 + ... + 1876959.

It is an arithmetic number, because the mean of its divisors is an integer number (41292174).

Almost surely, 2^161414819 is an apocalyptic number.

161414819 is a deficient number, since it is larger than the sum of its proper divisors (3753877).

161414819 is an equidigital number, since it uses as much as digits as its factorization.

161414819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753876.

The product of its digits is 6912, while the sum is 35.

The square root of 161414819 is about 12704.9131834893. The cubic root of 161414819 is about 544.4790004614.

The spelling of 161414819 in words is "one hundred sixty-one million, four hundred fourteen thousand, eight hundred nineteen".