161116634 has 32 divisors (see below), whose sum is σ = 292723200. Its totient is φ = 65036160.

The previous prime is 161116619. The next prime is 161116639. The reversal of 161116634 is 436611161.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 161116597 and 161116606.

It is not an unprimeable number, because it can be changed into a prime (161116639) 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, 11807 + ... + 21485.

It is an arithmetic number, because the mean of its divisors is an integer number (9147600).

Almost surely, 2^161116634 is an apocalyptic number.

161116634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161116634 is a deficient number, since it is larger than the sum of its proper divisors (131606566).

161116634 is a wasteful number, since it uses less digits than its factorization.

161116634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9758.

The product of its digits is 2592, while the sum is 29.

The square root of 161116634 is about 12693.1727318271. The cubic root of 161116634 is about 544.1435179477.

Adding to 161116634 its reverse (436611161), we get a palindrome (597727795).

The spelling of 161116634 in words is "one hundred sixty-one million, one hundred sixteen thousand, six hundred thirty-four".