878530161 has 4 divisors (see below), whose sum is σ = 1171373552. Its totient is φ = 585686772.

The previous prime is 878530141. The next prime is 878530181. The reversal of 878530161 is 161035878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (878530141) and next prime (878530181).

It is not a de Polignac number, because 878530161 - 2⁵ = 878530129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878530141) 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, 146421691 + ... + 146421696.

It is an arithmetic number, because the mean of its divisors is an integer number (292843388).

Almost surely, 2^878530161 is an apocalyptic number.

It is an amenable number.

878530161 is a deficient number, since it is larger than the sum of its proper divisors (292843391).

878530161 is a wasteful number, since it uses less digits than its factorization.

878530161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292843390.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 878530161 is about 29640.0094635612. The cubic root of 878530161 is about 957.7501425913.

The spelling of 878530161 in words is "eight hundred seventy-eight million, five hundred thirty thousand, one hundred sixty-one".