161503876 has 24 divisors (see below), whose sum is σ = 315010080. Its totient is φ = 72001152.

The previous prime is 161503873. The next prime is 161503877. The reversal of 161503876 is 678305161.

It is not an unprimeable number, because it can be changed into a prime (161503873) 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, 61210 + ... + 63793.

It is an arithmetic number, because the mean of its divisors is an integer number (13125420).

Almost surely, 2^161503876 is an apocalyptic number.

It is an amenable number.

161503876 is a deficient number, since it is larger than the sum of its proper divisors (153506204).

161503876 is a wasteful number, since it uses less digits than its factorization.

161503876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125043 (or 125041 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 161503876 is about 12708.4175254042. The cubic root of 161503876 is about 544.5791167368.

The spelling of 161503876 in words is "one hundred sixty-one million, five hundred three thousand, eight hundred seventy-six".