161634029 has 8 divisors (see below), whose sum is σ = 163478040. Its totient is φ = 159796800.

The previous prime is 161634017. The next prime is 161634049. The reversal of 161634029 is 920436161.

It can be written as a sum of positive squares in 4 ways, for example, as 17682025 + 143952004 = 4205^2 + 11998^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161634029 - 2¹² = 161629933 is a prime.

It is a super-2 number, since 2×161634029² = 52251118661545682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161633986 and 161634004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161634049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57599 + ... + 60339.

It is an arithmetic number, because the mean of its divisors is an integer number (20434755).

Almost surely, 2^161634029 is an apocalyptic number.

It is an amenable number.

161634029 is a deficient number, since it is larger than the sum of its proper divisors (1844011).

161634029 is a wasteful number, since it uses less digits than its factorization.

161634029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 161634029 is about 12713.5372339880. The cubic root of 161634029 is about 544.7253662183.

The spelling of 161634029 in words is "one hundred sixty-one million, six hundred thirty-four thousand, twenty-nine".