161126878 has 16 divisors (see below), whose sum is σ = 277539840. Its totient is φ = 69384600.

The previous prime is 161126873. The next prime is 161126879. The reversal of 161126878 is 878621161.

It is a self number, because there is not a number n which added to its sum of digits gives 161126878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161126873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192318 + ... + 193153.

It is an arithmetic number, because the mean of its divisors is an integer number (17346240).

Almost surely, 2^161126878 is an apocalyptic number.

161126878 is a deficient number, since it is larger than the sum of its proper divisors (116412962).

161126878 is a wasteful number, since it uses less digits than its factorization.

161126878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385503.

The product of its digits is 32256, while the sum is 40.

The square root of 161126878 is about 12693.5762494263. The cubic root of 161126878 is about 544.1550501483.

The spelling of 161126878 in words is "one hundred sixty-one million, one hundred twenty-six thousand, eight hundred seventy-eight".