161632834 has 16 divisors (see below), whose sum is σ = 273611520. Its totient is φ = 70935760.

The previous prime is 161632831. The next prime is 161632843. The reversal of 161632834 is 438236161.

It is a happy number.

It is a super-2 number, since 2×161632834² = 52250346053743112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161632834.

It is not an unprimeable number, because it can be changed into a prime (161632831) 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, 126034 + ... + 127309.

It is an arithmetic number, because the mean of its divisors is an integer number (17100720).

Almost surely, 2^161632834 is an apocalyptic number.

161632834 is a deficient number, since it is larger than the sum of its proper divisors (111978686).

161632834 is a wasteful number, since it uses less digits than its factorization.

161632834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253385.

The product of its digits is 20736, while the sum is 34.

The square root of 161632834 is about 12713.4902367525. The cubic root of 161632834 is about 544.7240237856.

Adding to 161632834 its reverse (438236161), we get a palindrome (599868995).

The spelling of 161632834 in words is "one hundred sixty-one million, six hundred thirty-two thousand, eight hundred thirty-four".