161029136 has 40 divisors (see below), whose sum is σ = 318283200. Its totient is φ = 78906240.

The previous prime is 161029129. The next prime is 161029139. The reversal of 161029136 is 631920161.

It is a junction number, because it is equal to n+sod(n) for n = 161029099 and 161029108.

It is not an unprimeable number, because it can be changed into a prime (161029139) 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, 259835 + ... + 260453.

It is an arithmetic number, because the mean of its divisors is an integer number (7957080).

Almost surely, 2^161029136 is an apocalyptic number.

161029136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161029136 is a deficient number, since it is larger than the sum of its proper divisors (157254064).

161029136 is a wasteful number, since it uses less digits than its factorization.

161029136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 161029136 is about 12689.7256077505. The cubic root of 161029136 is about 544.0449969988.

Adding to 161029136 its reverse (631920161), we get a palindrome (792949297).

The spelling of 161029136 in words is "one hundred sixty-one million, twenty-nine thousand, one hundred thirty-six".