161019696 has 40 divisors (see below), whose sum is σ = 421242880. Its totient is φ = 52992576.

The previous prime is 161019679. The next prime is 161019701. The reversal of 161019696 is 696910161.

161019696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17440 + ... + 25023.

It is an arithmetic number, because the mean of its divisors is an integer number (10531072).

Almost surely, 2^161019696 is an apocalyptic number.

161019696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161019696 is an abundant number, since it is smaller than the sum of its proper divisors (260223184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161019696 is a wasteful number, since it uses less digits than its factorization.

161019696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42553 (or 42547 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 161019696 is about 12689.3536478420. The cubic root of 161019696 is about 544.0343656202.

The spelling of 161019696 in words is "one hundred sixty-one million, nineteen thousand, six hundred ninety-six".