161229896 has 16 divisors (see below), whose sum is σ = 318217200. Its totient is φ = 76371984.

The previous prime is 161229889. The next prime is 161229923. The reversal of 161229896 is 698922161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530210 + ... + 530513.

It is an arithmetic number, because the mean of its divisors is an integer number (19888575).

Almost surely, 2^161229896 is an apocalyptic number.

It is an amenable number.

161229896 is a deficient number, since it is larger than the sum of its proper divisors (156987304).

161229896 is a wasteful number, since it uses less digits than its factorization.

161229896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060748 (or 1060744 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 161229896 is about 12697.6334802986. The cubic root of 161229896 is about 544.2709956750.

The spelling of 161229896 in words is "one hundred sixty-one million, two hundred twenty-nine thousand, eight hundred ninety-six".