161432929 has 16 divisors (see below), whose sum is σ = 194519808. Its totient is φ = 130977792.

The previous prime is 161432923. The next prime is 161432939. The reversal of 161432929 is 929234161.

161432929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161432929 - 2⁷ = 161432801 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (161432923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10449 + ... + 20785.

It is an arithmetic number, because the mean of its divisors is an integer number (12157488).

Almost surely, 2^161432929 is an apocalyptic number.

It is an amenable number.

161432929 is a deficient number, since it is larger than the sum of its proper divisors (33086879).

161432929 is a wasteful number, since it uses less digits than its factorization.

161432929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10464.

The product of its digits is 23328, while the sum is 37.

The square root of 161432929 is about 12705.6258799006. The cubic root of 161432929 is about 544.4993623795.

It can be divided in two parts, 1614 and 32929, that added together give a palindrome (34543).

The spelling of 161432929 in words is "one hundred sixty-one million, four hundred thirty-two thousand, nine hundred twenty-nine".