161361429 has 4 divisors (see below), whose sum is σ = 215148576. Its totient is φ = 107574284.

The previous prime is 161361427. The next prime is 161361437. The reversal of 161361429 is 924163161.

161361429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161361429 - 2¹ = 161361427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161361429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161361427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26893569 + ... + 26893574.

It is an arithmetic number, because the mean of its divisors is an integer number (53787144).

Almost surely, 2^161361429 is an apocalyptic number.

It is an amenable number.

161361429 is a deficient number, since it is larger than the sum of its proper divisors (53787147).

161361429 is an equidigital number, since it uses as much as digits as its factorization.

161361429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53787146.

The product of its digits is 7776, while the sum is 33.

The square root of 161361429 is about 12702.8118540739. The cubic root of 161361429 is about 544.4189627283.

The spelling of 161361429 in words is "one hundred sixty-one million, three hundred sixty-one thousand, four hundred twenty-nine".