161132929 has 2 divisors, whose sum is σ = 161132930. Its totient is φ = 161132928.

The previous prime is 161132927. The next prime is 161132957. The reversal of 161132929 is 929231161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96491329 + 64641600 = 9823^2 + 8040^2 .

It is a cyclic number.

It is not a de Polignac number, because 161132929 - 2¹ = 161132927 is a prime.

Together with 161132927, it forms a pair of twin primes.

It is equal to p_9034576 and since 161132929 and 9034576 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 161132894 and 161132903.

It is not a weakly prime, because it can be changed into another prime (161132927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80566464 + 80566465.

It is an arithmetic number, because the mean of its divisors is an integer number (80566465).

Almost surely, 2^161132929 is an apocalyptic number.

It is an amenable number.

161132929 is a deficient number, since it is larger than the sum of its proper divisors (1).

161132929 is an equidigital number, since it uses as much as digits as its factorization.

161132929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 161132929 is about 12693.8145960936. The cubic root of 161132929 is about 544.1618618424.

The spelling of 161132929 in words is "one hundred sixty-one million, one hundred thirty-two thousand, nine hundred twenty-nine".