161284929 has 16 divisors (see below), whose sum is σ = 232612800. Its totient is φ = 98813376.

The previous prime is 161284927. The next prime is 161284957. The reversal of 161284929 is 929482161.

It is not a de Polignac number, because 161284929 - 2¹ = 161284927 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161284927) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 99 + ... + 17960.

It is an arithmetic number, because the mean of its divisors is an integer number (14538300).

Almost surely, 2^161284929 is an apocalyptic number.

It is an amenable number.

161284929 is a deficient number, since it is larger than the sum of its proper divisors (71327871).

161284929 is a wasteful number, since it uses less digits than its factorization.

161284929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18304.

The product of its digits is 62208, while the sum is 42.

The square root of 161284929 is about 12699.8003527615. The cubic root of 161284929 is about 544.3329144199.

The spelling of 161284929 in words is "one hundred sixty-one million, two hundred eighty-four thousand, nine hundred twenty-nine".