161046620 has 48 divisors (see below), whose sum is σ = 388136448. Its totient is φ = 54984000.

The previous prime is 161046601. The next prime is 161046637. The reversal of 161046620 is 26640161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161046620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32849 + ... + 37431.

It is an arithmetic number, because the mean of its divisors is an integer number (8086176).

Almost surely, 2^161046620 is an apocalyptic number.

161046620 is a gapful number since it is divisible by the number (10) 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 161046620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194068224).

161046620 is an abundant number, since it is smaller than the sum of its proper divisors (227089828).

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

161046620 is a wasteful number, since it uses less digits than its factorization.

161046620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850 (or 4848 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 161046620 is about 12690.4144928367. The cubic root of 161046620 is about 544.0646864760.

Adding to 161046620 its reverse (26640161), we get a palindrome (187686781).

The spelling of 161046620 in words is "one hundred sixty-one million, forty-six thousand, six hundred twenty".