161803876 has 48 divisors (see below), whose sum is σ = 323270640. Its totient is φ = 70318080.

The previous prime is 161803823. The next prime is 161803897. The reversal of 161803876 is 678308161.

161803876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3648100 + 158155776 = 1910^2 + 12576^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60520 + ... + 63136.

It is an arithmetic number, because the mean of its divisors is an integer number (6734805).

Almost surely, 2^161803876 is an apocalyptic number.

It is an amenable number.

161803876 is a deficient number, since it is larger than the sum of its proper divisors (161466764).

161803876 is a wasteful number, since it uses less digits than its factorization.

161803876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2702 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 161803876 is about 12720.2152497511. The cubic root of 161803876 is about 544.9161007678.

The spelling of 161803876 in words is "one hundred sixty-one million, eight hundred three thousand, eight hundred seventy-six".