161035812 has 72 divisors (see below), whose sum is σ = 471161600. Its totient is φ = 45422208.

The previous prime is 161035807. The next prime is 161035813. The reversal of 161035812 is 218530161.

161035812 is a `hidden beast` number, since 1 + 610 + 35 + 8 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161035813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15864 + ... + 23952.

Almost surely, 2^161035812 is an apocalyptic number.

161035812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161035812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235580800).

161035812 is an abundant number, since it is smaller than the sum of its proper divisors (310125788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161035812 is a wasteful number, since it uses less digits than its factorization.

161035812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8185 (or 8180 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 161035812 is about 12689.9886524772. The cubic root of 161035812 is about 544.0525152950.

Adding to 161035812 its reverse (218530161), we get a palindrome (379565973).

The spelling of 161035812 in words is "one hundred sixty-one million, thirty-five thousand, eight hundred twelve".